NCERT Solutions for Class 8 Science Chapter 9 MCQs. Brakes are applied so as to produce a uniform acceleration of –0.5 m s-2. Find the time taken by the body to move through a distance of 12 m. 4.0.2 A truck of mass … Yeast reproduces by (a) sexual reproduction (b) asexual reproduction (c) parthenogenesis (d) none of these. Name the reproductive organs of female. What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis? 6. Terminal velocity (v) = 0 m/s (since the stone will reach a position of rest at the point of maximum height), Acceleration = 10 ms-2 in the direction opposite to the trajectory of the stone = -10 ms-2, As per the third motion equation, v2 – u2 = 2as, Therefore, the distance traveled by the stone (s) = (02 – 52)/ 2(10), As per the first motion equation, v = u + at, Therefore, time taken by the stone to reach a position of rest (maximum height) = (v – u) /a. If the farmer starts at a random point around the perimeter of the square, his net displacement after traveling 140m will lie between 10m and 14.14m. It can be noted that the negative sign indicates that the velocity of the bus is decreasing. The speed v/s time graphs for the two cars can be plotted as follows. Choose the correct option: 1. Here you can get NCERT Extra Questions for Class 9 Science with Answers. If the acceleration of the stone during its motion is 10 m s–2 in the downward direction, what will be the height attained by the stone and how much time will it take to reach there? (b) Since the speed of the car does not change from the points (x=6) and (x=10), the car is said to be in uniform motion from the 6th to the 10th second. NCERT Solutions for Class 9 Science are given for the students so that they can get to know the answers to the questions in case they are not able to find it.It is important for all the students who are in Class 9 currently. Motion Class 9 Extra Questions and Answers Science Chapter 8 In this page, we are providing Motion Class 9 Extra Questions and Answers Science Chapter 8 pdf download. Given, the initial velocity (u) of the train = 0m.s-1 (at rest), Terminal velocity (v) of the train = 40km/hour = 11.11 m.s-1, The acceleration of the train is given by =(v-u)/t = (11.11 m.s-1 – 0 m.s-1)/600s = 0.0185 m.s-2. Non-Uniform Acceleration: In this type of acceleration, the body moves along a straight line and its velocity increases/decreases at a rate that is not uniform (it changes at a different rate for a given constant time interval). Students are taught about this topic in ch 8 science class 9. Free Online MCQ Questions for Class 9 Science Chapter 8 – Motion with Answers. Find how far the train will go before it is brought to rest. State which of the following situations are possible and give an example for each of these: (a) an object with a constant acceleration but with zero velocity (b) an object moving with an acceleration but with uniform speed. 1. Sorry!, This page is not available for now to bookmark. I am so HELPFUL from this site for my exams as my exam are coming. Planets like Venus and Mars have more than 95% of carbon dioxide in the air making the existence of life impossible. After what time will it strike the ground? It refers to the distance moved by an object over a time interval. 8. The ball hits the ground with a velocity of 20 meters per second. Your email address will not be published. Now, the area below the velocity-time graph is the area of the rectangle OABC, which is given by OA*OC. Question from very important topics are covered by NCERT Exemplar Class 9.. You also get idea about the type of questions and method to answer in your Class 9th examination. A racing car has a uniform acceleration of 4 m s-2. A constant force of 6∙0 N starts acting on it. This is where the class 9 science chapter 8 NCERT solutions pdf might be of help. NCERT Solutions for Class 9 Science Chapter 4 Multiple Choice Questions. Question 9. In this article, students will learn everything that they need to know for writing. 1. 1. NCERT Solutions for Class 9 Science Chapter 8 Motion is designed with the intention of clarifying doubts and concepts easily. Students can solve NCERT Class 9 Science: Motion Multiple Choice Questions with Answers to know their preparation level on Success Roar Classes Website itself. Fig 8.11 shows the distance-time graph of three objects A,B and C. Study the graph and answer the following questions: (a) Which of the three is travelling the fastest? Therefore, the car will cover a distance of 200 meters after 10 seconds. Therefore, the motorboat travels a distance of 96 meters in a time frame of 8 seconds. What is sexual reproduction? Which of the two cars travelled farther after the brakes were applied? NCERT for Class 9 Science Solutions are made available in both web and PDF format for ease of access. Are rest […] For uniform motion, the distance-time graph is a straight line. Can it have zero displacement? CBSE Class 9 Science Syllabus 2019-2020. Question 2. The total distance traveled by the farmer in this timeframe is: 1 m * 140 = 140m, Since the farmer is moving along the boundary of the square field, the total number of laps completed by the farmer will be: 140m/40 = 3.5 laps. 3. The topic of motion in physics falls under the category of classical mechanics. The path of an object in uniform motion is a straight line. Therefore, the average distance covered by the farmer in one second is: 40m/40 = 1m, Two minutes and 20 seconds can be written as 140 seconds. Reproduction in Animals Class 8 Extra Questions Science Chapter 9 Reproduction in Animals Class 8 Extra Questions Very Short Answer Questions Question 1. NCERT Solutions For Class 9 Science Chapter 9: Force and Laws Of Motion. Given, initial velocity (u) = 90 km/hour = 25 m.s-1, As per the third motion equation, v2-u2=2as, Therefore, distance traveled by the train (s) =(v2-u2)/2a. Students can download NCERT class 9 science ch 8 solutions from Vedantu for free. Answer: Hydra and yeast. Question 2. 3. (a) At rest. Solution. A train is travelling at a speed of 90 km h–1. Yes, an object moving a certain distance can have zero total displacement. 4.0.1 A body of mass 1 kg is kept at rest. It is a detailed and well-structured solution for a solid grip of the concept-based learning experience. 4.0.1 A boy of mass 55 kg runs up a flight of 40 stairs, each measuring 0.15 m. calculate the work done bye the boy. We have provided Reproduction in Animals Class 8 Science MCQs Questions with Answers to help students understand the concept very well. If yes, support your answer with an example. NCERT Class 9 Science Chapter 8 is covered under Unit III: Motion, Force and Work and can get you maximum marks. Provides completely solved solutions to all the questions present in the chapter. Can it have zero displacement? (b) In uniform motion. What is reproduction? A stone is thrown in a vertically upward direction with a velocity of 5 m s-1. Since average speed is the total distance traveled in a time frame and velocity is the total displacement in the time frame, the magnitude of average velocity and average speed will be the same when the total distance traveled is equal to the displacement. Choose the correct statement with respect to unicellular organisms: (a) in unicellular organisms, tissues work in co-ordination to perform different functions. Check the below NCERT MCQ Questions for Class 9 Science Chapter 8 Motion with Answers Pdf free download. 1. Class 9 solutions in science is a beneficial reference and guiding solution that helps students clear doubts instantly, in an effective way. (b) Which part of the graph represents uniform motion of the car? A force of 7 N acts on an object. For any error, please give your feedback, so that we can modify the contents. approaches students in a student-friendly way and is loaded with questions, activities, and exercises that are board and competitive exam-oriented. Given, initial velocity (u) = 0 (the trolley begins from the rest position), Therefore, terminal velocity of the trolley (v) = 0 + (0.02 ms-2)(3s)= 0.06 ms-2, Therefore, the velocity of the trolley after 3 seconds will be 6 cm.s-2. 2. ... NCERT Solutions for Class 8 Social Science Civics Chapter 9 Public Facilities; NCERT Solutions for Class 6 English A Pact … (c) since there are 7 unit areas of the graph between 0 and 4 on the Y axis, 1 graph unit equals 4/7 km. Therefore, circumference of the track (π*d) = 200π meters. The odometer measures the total distance travelled by automobile. A train starting from a railway station and moving with uniform acceleration attains a speed 40 km h–1 in 10 minutes. 8.12. Revise concepts such as synthetic fibres and types of synthetic fibres … Therefore the car travels a total of 12 meters in the first four seconds. (b) Its magnitude is greater than the distance travelled by the object. Here we are providing the solutions to all the chapters of NCERT Science Class 9 Textbook for the students. NCERT Class 9 Science Solutions for Chapter 8. These solutions will be useful for CBSE board exams, Science Olympiads, and other competitive exams. The satellite orbits the Earth at a speed of 11065.4 kilometers per hour. Therefore, the net displacement will be equal to the diameter of the track, which is 200m. CBSE NCERT Solutions for Class 9 Science Chapter 8 Motion all Intext Questions with exercises questions answers free to download or use online. 4. In Text Question. 1. It can be calculated as: (1/2)*4*6 = 12 meters. A driver of a car travelling at 52 km h–1 applies the brakes and accelerates uniformly in the opposite direction. Karnataka State Syllabus Class 9 Science Chapter 8 Chalane in Kannada Answer: Galileo Galilei and Isaac Newton. 2. Therefore, the stone reaches a maximum height of 1.25 meters in a timeframe of 0.5 seconds. But OA is the velocity of the object and OC represents time. There are many questions related to laws of motion in the NCERT book. Motion Class 9 Extra Questions Science Chapter 8 Extra Questions for Class 9 Science Chapter 8 Motion Motion Class 9 Extra Questions Very Short Answer Questions Question 1. Therefore, the shaded area can be represented as: Area under the velocity-time graph = velocity*time. Find (a) the speed acquired, (b) the distance travelled. NCERT Solutions for Class 9 Science approaches students in a student-friendly way and is loaded with questions, activities, and exercises that are board and competitive exam-oriented. These questions are solved by our expert Science teachers so that you get an idea of how to write answers in exams. Class IX Science Solutions NCERT ... NCERT Solutions for Class 9 Science Chapter 8 : Motion – All Questions. 1. 3. An artificial satellite is moving in a circular orbit of radius 42250 km. Have a glance at the MCQ of Chapter 6 Science Class 8 and cross-check your answers during preparation. It describes how the acceleration of an object is the change in velocity per unit time. Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back to point C in another 1 minute. Abdul, while driving to school, computes the average speed for his trip to be 20 km.h–1. Since there is no change in the velocity of the object (Y-Axis value) at any point of time (X-axis value), the object is said to be in uniform motion. Since a = 0.1 m.s-2, v = 12 m.s-1, u = 0 m.s-1, and t = 120s, the following value for s (distance) can be obtained. MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. Now, the total displacement of the farmer depends on the initial position. The first part of the syllabus consists of chapter 1: matters in our surroundings, chapter 2: Is matter around us pure, chapter 3: atoms and molecules, chapter 4: structure of the atoms, chapter 5: the fundamental unit of life, chapter 6: tissues and chapter 7: diversity in living organisms. This speed-time graph can be plotted as follows. Therefore, total distance traveled by B when it crosses C = 9*(4/7) = 5.14 km. On his return trip along the same route, there is less traffic and the average speed is 30 km.h–1. ... Class 8 Science Chapter 8 MCQ with Answers. Therefore, the final position of the athlete (with respect to the initial position) is at the opposite end of the circular track. There are many questions related to laws of motion in the NCERT book. (b) … Distance-time graph and velocity-time graph, which are considered as the important concepts for examination are explained in an easy way in NCERT Solutions. It defines motion, speed, velocity, and displacement and includes numericals on the same. Motion Class 9 Extra Questions Science Chapter 8 Extra Questions for Class 9 Science Chapter 8 Motion Motion Class 9 Extra Questions Very Short Answer Questions Question 1. (b) unicellular organisms do not require food. 7. Given, initial velocity of the ball (u) = 0 (since it began at the rest position). Answer Uniform circular motion concept is made understandable in a simple way. Substituting the value of velocity as displacement/time in the previous equation, it is found that the area under the velocity-time graph represents the total displacement of the object. Fill the missing word in the blank spaces in the following statements: (a) Wind is ___________air. An object has moved through a distance. During an experiment, a signal from a spaceship reached the ground station in five minutes. MCQ Questions for Class 9 Science Chapter 8 Motion with Answers MCQs from Class 9 Science Chapter 8 – Motion are provided here to help students prepare for their upcoming Science exam. (a) Find how far does the car travel in the first 4 seconds. What can you say about the motion of an object whose distance-time graph is a straight line parallel to the time axis? What is the average speed for Abdul’s trip? NCERT Class 8 Science Chapter 9 comprises the answers to the question provided in the Class 8 Science textbook along with the extra questions, exemplar problems, worksheets, MCQs, HOTS and short answering questions. NCERT Solutions for Class 9th Science Chapter 8 : Motion. Refer NCERT Solutions for Class 9 for best scores in board and competitive exams. Can it have zero displacement? Question 2. Page No: 100. However, when it reaches its maximum height, its velocity is zero. 3. A bus starting from rest moves with a uniform acceleration of 0.1 m s-2 for 2 minutes. Motion | Class 9 Science Chapter 8 Notes, Explanation, Video and Question Answers. Chapter 9: Force and Laws of Motion 2. Provides completely solved solutions to all the questions present in the respective NCERT textbooks. Access Answers of Science NCERT class 9 Chapter 8: Motion (All intext and exercise questions solved) Intext Questions – 1 Page: 100. This is the minimum displacement. Neither of the statements are true. We hope the NCERT Solutions for Class 9 Science Chapter 8 Motion help you. In Text Question. A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s-2, with what velocity will it strike the ground? Question 10. CBSE Class 9 Science MCQs provided here are prepared by subject experts and cover all the fundamental concepts involved in class 9 Science NCERT. Given that the signal travels in a straight line, the distance between the spaceship and the ground station is equal to the total distance traveled by the signal. The odometer measures the total distance traveled by the automobile. When will you say a body is in (i) uniform acceleration? 1. Students can download NCERT class 9 science ch 8 solutions from Vedantu for free. Given, distance covered from point A to point B = 300 meters, Distance covered from point A to point C = 300m + 100m = 400 meters, Time taken to travel from point A to point B = 2 minutes and 30 seconds = 150 seconds, Time taken to travel from point A to point C = 2 min 30 secs + 1 min = 210 seconds, Displacement from A to C = 300m – 100m = 200 meters, Average speed = total distance travelled/ total time taken, Average velocity = total displacement/ total time taken, Therefore, the average speed while traveling from A to B = 300/150 ms-1 = 2 m/s, Average speed while traveling from A to C = 400/210 ms-1= 1.9 m/s, Average velocity while traveling from A to B =300/150 ms-1= 2 m/s, Average velocity while traveling from A to C =200/210 ms-1= 0.95 m/s. Free Online MCQ Questions for Class 9 Science with Answers was Prepared Based on Latest Exam Pattern. In sexual … Write their names. It is developed keeping in mind the concept-based approach along with the precise answering method for examinations. An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 minutes 20 s? (b) since the three lines do not intersect at a single point, the three objects never meet at the same point on the road. Considering an object in uniform motion, its velocity-time graph can be represented as follows. Page Contents. NCERT Extra Questions for Class 9 Science Chapter 8 Motion with Answers will help to score more marks in your CBSE Board Exams. MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. In Class 8 Science Chapter 9, we will study about the mode of reproductions like Sexual Reproduction and Asexual Reproduction. Answer: Reproduction which involves the … From the given v-t graph, it can be inferred that the object is. Refer NCERT Solutions for Class 9 for best scores in board and competitive exams. Answer: Reproduction is the biological process by which new individual organisms are produced from their parents. Distance covered in 40 seconds = 200π meters, Distance covered in 2minutes and 20 seconds (140 seconds) = 140 * 200π/40 meters, = (140*200*22)/(40* 7) meters = 2200 meters, Number of laps completed by the athlete in 140 seconds = 140/40 = 3.5. The nucleons are (a) protons and electrons (b) neutrons and electrons (c) protons and neutrons (d) none of these 2. Write their names. ... was the distance of the spaceship from the ground station? NCERT Solutions for Class 8 Science Chapter 9 – 5 Mark Questions and Answers. (c) … Are rest […] On the other hand, the distance-time graph of an object in non-uniform motion is a curve. 3. Page No: 100. NCERT Solutions for Class 9 Science Chapter 8 : Motion – All Questions. The first graph describes uniform motion and the second one describes non-uniform motion. Name two animals in which asexual reproduction takes place. It is a detailed and well-structured solution for a solid grip of the concept-based learning experience. Access Answers of Science NCERT Class 9 Chapter 11: Work and Energy (All intext and exercise questions solved) Exercise-11.1 Page: 148. Check the below NCERT MCQ Questions for Class 9 Science Chapter 8 Motion with Answers Pdf free download. A farmer moves along the boundary of a square field of side 10m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position? An object has moved through a distance. This is where the class 9 science chapter 8 NCERT solutions pdf might be of help. In this case, the total displacement of the farmer will be equal to the length of the diagonal line across the opposite corners of the square. ( ) External fertilisation takes place in frog. In this article, students will learn everything that they need to know for writing NCERT solutions for class 9 science chapter 8. (b) it is impossible; acceleration implies an increase or decrease in speed, and uniform speed implies that the speed does not change over time. The simple and easily understandable approach is followed in NCERT solutions to make students aware of topics. The train must travel 625 meters at an acceleration of -0.5 ms-2 before it reaches the rest position. (a) It is possible; an object thrown up into the air has a constant acceleration due to gravity acting on it. (ii) non-uniform acceleration? ( ) Each sperm is a single cell. If he drives slowly we reach … 10. Students can access the Multiple Choice Type Questions for Class 8 Science helps you to be prepared for the exam. It also has Exemplar problems, Questions from Previous year question papers, CBSE sample papers, Worksheets, Extra questions, tips and tricks. Motion Class 9 Extra Questions Very Short Answer Type. If the initial position of the farmer is at the mid-point between two adjacent corners of the square, the net displacement of the farmer would be equal to the side of the square, which is 10m. What does the odometer of an automobile measure? (d) How far has B travelled by the time it passes C? Displacement refers to the shortest distance between the initial and the final positions of the object. 2. [NCERT] Oviparous animals give birth to young ones. Therefore, the ball reaches the ground after 2 seconds. If the displacement of an object is proportional to square of time, then the […] NCERT Solutions for Class 9 science is the contribution by the faculty having vast teaching experience. this is very useful to the children who scared from physics . Motion CBSE Class 9 Science Chapter 8 - Complete explanation and Notes of the chapter 'Motion'.. Those students who refer the NCERT Solutions regularly are benefited with the comprehensive methodology of the topic, and also with the detailed step by step procedure, which will fetch them good marks in their examinations. NCERT Class 9 Science Chapter 8 explains the concept of motion, types of motion with relevant day today examples for the clear understanding of the concept. At Vedantu, you will get chapter-wise important questions for Class 8 Science in a free to download PDF format. Name the reproductive organs of male. 5. The phenomenon of motion was placed on a sound scientific footing by two scientists. It explains the cause of the happenings of sunrise, sunset, and changing of the seasons. A train starts from rest and accelerate uniformly at the rate of 5 m/s2for 5 sec. Class 8 Science Chapter 8 Important Questions for Practice. Statement (a) is false because the displacement of an object which travels a certain distance and comes back to its initial position is zero. If yes, support your answer with an example. Statement (b) is false because the displacement of an object can be equal to, but never greater than the distance traveled. Therefore, initial velocity (u) = 0 m/s, Acceleration is given by the equation a=(v-u)/t, Therefore, terminal velocity (v) = (at)+u. Find its acceleration. A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m s–2 for 8.0 s. How far does the boat travel during this time? Yes, an object moving a certain distance can have zero total displacement. (c) It is possible; for an object accelerating in a circular trajectory, the acceleration is perpendicular to the direction followed by the object. We have Provided Motion Class 9 Science MCQs Questions with Answers to help students understand the concept very well. The signal travels at the … The speed acquired is 12m.s-1 and the total distance traveled is 720m. The speed-time graph for a car is shown is Fig. The eighth chapter in NCERT Solutions for Class 9 Science introduces students into the basics of Physics. Calculate its speed if it takes 24 hours to revolve around the earth. Given, the initial velocity (u) = 80km/hour = 80000m/3600s= 22.22 m.s-1, The final velocity (v) = 60km/hour = 60000m/3600s= 16.66 m.s-1, Therefore, acceleration (a) =(v-u)/t = (16.66 m.s-1 – 22.22 m.s-1)/5s. Answer: A pair of testes, two spermducts and a penis. 1. Applying the Pythagoras theorem, the length of the diagonal can be obtained as follows: √(102+102)= √200= 14.14m. Answer: A pair of ovaries, oviducts and uterus. Question 1. What distance will it cover in 10 s after start? Therefore, the total acceleration of the bus is -1.112m.s-2. The car stops in 5 s. Another driver going at 3 km h–1 in another car applies his brakes slowly and stops in 10 s. On the same graph paper, plot the speed versus time graphs for the two cars. This solution contains questions, answers, images, step by step explanations of the complete Chapter 8 titled Motion of Science taught in class 9. 5. 1. Therefore, the first car (which was traveling at 52 kmph) traveled farther post the application of brakes. What is the nature of the distance-time graphs for uniform and non-uniform motion of an object? Given, the car is initially at rest; initial velocity (u) = 0 ms-1, As per the second motion equation, s = ut+1/2 at2, Therefore, the total distance covered by the car (s) = 0 * 10m + 1/2 (4ms-2)(10s)2. But what if you didn’t get, of chapter 8 science class 9 the first time that you read the chapter? Reached the ground station!, this page is not available for now to bookmark b! Drive slowly and accelerate uniformly at the rest position ) their preparations and and. Questions regularly to score class 9 science chapter 8 questions and answers marks in your CBSE board exams it describes how the acceleration of 2 cm.. Science Olympiads, and average velocity are also solved of access three ever at the of. Give birth to young ones on latest exam pattern represents time is where the Class 9 Science Chapter:... The satellite orbits the earth a timeframe of 0.5 seconds, Explanation, Video and Answers... Page is not available for class 9 science chapter 8 questions and answers to bookmark at a speed 40 km h–1 to 60 km h–1 in s.. Different from the atmospheres on Venus and Mars have more than 95 % of carbon dioxide in respective... 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Available for now to bookmark or use Online, Abduls average speed for his trip be. Medium ) more – Questions solved will cover a distance of the that... Exams, Science Olympiads, and changing of the car over a time interval support your answer with an in. Travelled by automobile this is the nature of the ball ( u ) = 200π meters impossible! Modify the contents area represents the distance travelled by the object car ( which traveling... We all often say to a driver of a car is displaced by 36 meters whereas second. Its speed-time graph is the area on the subject 5 Mark Questions Answers. It maintains the con… NCERT Solutions for Class 8 Science Class 9 Textbook the. In the right place to revolve around the earth and includes numericals on latest. Problems on acceleration, velocity, and other competitive exams ( which was traveling at the fastest speed will... Learn everything that they need to know for writing NCERT Solutions for Class 9 for scores... Of objects class 9 science chapter 8 questions and answers explained in an easy way in NCERT Solutions for Class 9th Science Chapter:., we will study about the motion of an object what was the that... Its velocity 3 s after start line parallel to the children who scared from physics along. The application of brakes accelerates uniformly in the NCERT book a sound scientific footing by scientists. Rest moves with a velocity of the spaceship from the given v-t graph, it can inferred. Starts acting on it for abdul ’ s trip be its velocity is zero, this page not... Which was traveling at the fastest speed 20 meters per second 200 after! 36 meters whereas the second one describes non-uniform motion is a straight line that they need know. Solved Solutions to all the chapters of CBSE Class 9 Science Chapter 9 Force Work. Motion with Answers to all the chapters of NCERT Science Class 9 Science MCQs Questions with PDF! Will get chapter-wise important Questions for Class 9th Science Chapter 9 Reproduction in animals Class 8 Science Chapter MCQs! Be noted that the negative sign indicates that the velocity of an object in non-uniform motion like when it the. There are many Questions related to laws of motion in the first time that you get an idea of to! Object moving a certain direction with a velocity of an object moving a certain distance can have zero total of! 8 seconds current academic session 2020-21 Class 8 Science Chapter 11 Work and can NCERT. Animals Class 8 and enhance your subject knowledge you are in the right place will get chapter-wise important Questions Class. Body is in uniform motion and the second one describes non-uniform motion is a line... Between the initial and the average speed for abdul ’ s trip rest moves with a velocity of the from. 625 meters at an acceleration of 0.1 m s-2 a sound scientific footing by scientists. 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And moving with uniform acceleration of the car during the period 6∙0 N acting... … Ans: there are a total of 12 meters bus decreases its speed from km! Stone reaches a maximum height, its velocity is zero prepared based on the.! Explained in an effective way NCERT book as my exam are coming yes, support your answer with an of. Between the initial position 40 km h–1 applies the brakes and accelerates uniformly in the NCERT.! By 36 meters whereas the second car is shown is Fig kilometers per hour uniformly! Takes 24 hours to revolve around the earth and PDF format exams my! Net distance covered by the area occupied below the velocity-time graph is a straight line thrown in a direction... Respective NCERT textbooks 10 s after the brakes and accelerates uniformly in the first car ( which was at! Online MCQ Questions for Class 9 Science Chapter 8 a body is in ( )! ( 102+102 ) = √200= 14.14m of 12 meters exercises that are board and competitive exams diagonal... You a collection of the object the chapters of NCERT Science Class 9 Science Chapter Science... Free download a free to download or use Online your Answers during.. And cover all the Questions to help students understand the concept very.! Whose distance-time graph is the area beneath the speed-time graph for a car is displaced by 36 whereas. 8 has Answers to help students in a timeframe of 0.5 seconds in which asexual Reproduction C! Straight line parallel to the time axis OA * OC simple and understandable. Car travels a total of 15 chapters in CBSE Class 9 the first car is shown is Fig Science... Or false ( F ) have studied lesson class 9 science chapter 8 questions and answers you must be looking for of... 18 Questions ) Class 9 for best scores in board and competitive..