This quiz works best with JavaScript enabled. Home > Cbse > Class 9 > Science > Motion > Class 9 Science Chapter 8 Motion – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Science Chapter 8 Motion Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The acceleration of a body from a velocity-time graph is A) Is denoted by a line parallel to the time axis at any point on the distance axis. B) Equal to the slope of the graph. C) Area under the graph. D) Is denoted by a line parallel to the distance axis at any point on the time axis. Show Answer Correct Answer: B) Equal to the slope of the graph. 2. What does area velocity time graph give? A) Distance. B) Acceleration. C) Displacement. D) None of the above. Show Answer Correct Answer: C) Displacement. 3. Velocity is both ..... and ..... A) Direction, mass. B) Volume, density. C) Speed, direction. D) Direction, magnitude. Show Answer Correct Answer: C) Speed, direction. 4. Acceleration is a vector quantity, which indicates that its value is ..... A) Can be positive, negative or zero. B) Is always negative. C) Is always positive. D) Is zero. Show Answer Correct Answer: A) Can be positive, negative or zero. 5. An aeroplane accelerates down a runway at 3m/s2 for 30s until it isfinally lifts off the ground. Determine the distance travelled beforetakeoff? A) 1400m. B) 1260m. C) 1450m. D) 1350m. Show Answer Correct Answer: D) 1350m. 6. When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then the retardation will be: A) + 2 m/s$^{2}$. B) -0.5 m/s$^{2}$. C) -2 m/s$^{2}$. D) + 0.5 m/s$^{2}$. Show Answer Correct Answer: D) + 0.5 m/s$^{2}$. 7. Formula to find the average velocity of a body is given by A) In = (y + c)/2. B) Sn ={u + a/2(2n-1)}. C) S= ut + 1/2 a t2. D) V= u+ at. Show Answer Correct Answer: A) In = (y + c)/2. 8. A car moving at 25 m/s brakes are applied. Find the distance travelled by the car before it comes to rest after 5 s? A) 750m. B) Hoop. C) Lavish. D) 650m. Show Answer Correct Answer: C) Lavish. 9. What does the slope of velocity-time graph give? A) Distance. B) Change in velocity. C) Displacement. D) Acceleration. Show Answer Correct Answer: D) Acceleration. 10. An satellite which is moving at constant speed in orbit around the Earth has an acceleration ..... A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. A car is driven for 3 hours. What else do you need to know to describe this car's speed? A) The distance the car is driven. B) The time of day. C) The road the car in driven on. D) The number of passengers in the car. Show Answer Correct Answer: A) The distance the car is driven. 12. A train travels 120 km in 2 hours and 30 minutes. What is its average speed? A) 240 km/hr. B) 300 km/hr. C) 48 km/hr. D) 60 km/hr. Show Answer Correct Answer: C) 48 km/hr. 13. The shortest distance between initial and final position: A) Displacement. B) Velocity. C) Distance. D) Speed. Show Answer Correct Answer: A) Displacement. 14. Slope of a velocity-time graph gives A) The speed. B) The distance. C) The acceleration. D) The displacement. Show Answer Correct Answer: C) The acceleration. 15. What does the slope of distance-time graph give? A) Acceleration. B) Uniform speed. C) Speed. D) Both[b] and [c] depending upon the time of graph. Show Answer Correct Answer: C) Speed. 16. Where an object is located is called its A) Position. B) Direction. C) Distance. D) Force. Show Answer Correct Answer: A) Position. 17. What is the simplest type of motion? A) Motion in a straight line. B) Motion around a circular path. C) Motion in a crooked line. D) Motion around you. Show Answer Correct Answer: A) Motion in a straight line. 18. Wind blowing at 20 mph.Vector or scalar? A) Scalar. B) Vector. C) All the above. D) None of the above. Show Answer Correct Answer: A) Scalar. 19. SI unit of acceleration is A) M/s. B) M/s$^{2}$. C) M/my. D) Km/hr. Show Answer Correct Answer: B) M/s$^{2}$. 20. A ship is moving at a speed of 56 km/h. One second later it is moving at 58 km/h, then its acceleration is A) 7.2 m h$^{-2 }$. B) 72 km h $^{-2} $. C) 7200 km h $^{-2} $. D) 720 km h $^{-2} $. Show Answer Correct Answer: C) 7200 km h $^{-2} $. 21. An object moving in a circular path with uniform speed experiences a continuous change in its A) Direction. B) Velocity. C) Speed. D) Both a and b. Show Answer Correct Answer: D) Both a and b. 22. Which is an example of zero acceleration? A) A boat speeding up. B) A merri-go-round moving at a constant rate. C) A person running on a treadmill at a rate of 6 MPH. D) A car coming to a stop. Show Answer Correct Answer: C) A person running on a treadmill at a rate of 6 MPH. 23. 30 m/sec, East. Scalar or Vector A) Scalar. B) Vector. C) Neither. D) None of the above. Show Answer Correct Answer: B) Vector. 24. Energy due to motion is ..... energy. A) Energy. B) Potential. C) Friction. D) Kinetic. Show Answer Correct Answer: D) Kinetic. 25. The numerical ratio of displacement to distance for a moving object is A) Always less than 1. B) Always equal to 1. C) Always more than 1. D) Equal or less than 1. Show Answer Correct Answer: D) Equal or less than 1. 26. Rate of change of velocity is called- A) Average speed. B) Average velocity. C) Acceleration. D) None of these. Show Answer Correct Answer: C) Acceleration. 27. Displacement and distance are always the same number. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 28. Which of the following has INCORRECT units? A) Displacement = m. B) Velocity = s. C) Time = s. D) Speed = m/s. Show Answer Correct Answer: B) Velocity = s. 29. SI Unit of measurement of acceleration is A) M/s. B) M/hr. C) M/s2. D) None of the above. Show Answer Correct Answer: C) M/s2. 30. A scooterist covers a distance of 3 kilometres in 5 minutes. Calculate his speed in m/s A) 5 m/s. B) 20 m/s. C) 15 m/s. D) 10 m/s. Show Answer Correct Answer: D) 10 m/s. 31. The process of changing distance or position from another object A) Acceleration. B) Reference point. C) Motion. D) Location. Show Answer Correct Answer: C) Motion. 32. A car travels 5 km towards north than turns right and travels 3km further, the car again turns right and travel 1 km and comes to rest. What is the distance travelled and displacement of the car? (a) Distance:5km and Displacement:9km (b) Distance:9km and Displacement:5km (c) Distance:9km and Displacement:7km (d) Distance:7km and Displacement:9km A) A. B) C. C) D. D) B. Show Answer Correct Answer: D) B. 33. A bus starting from rest moves with uniform acceleration of 0.1 m/s$^{2}$ for 2 minutes. The distance covered by the bus is A) 320 m. B) 620 m. C) 720 m. D) 520 m. Show Answer Correct Answer: C) 720 m. 34. S = ut + 1/2 at$^{2}$. Here S means ..... A) Time. B) Velocity. C) Distance. D) Speed. Show Answer Correct Answer: C) Distance. 35. Angular velocity (w) and linear velocity (v) of a body moving in a circle of radius (r) are related as: A) V = w/r. B) V = rw. C) R = vw. D) None of these. Show Answer Correct Answer: B) V = rw. 36. Straight line overlapping time axis on v-t graph shows- A) Uniform velocity. B) Uniform acceleration. C) Rest. D) None of these. Show Answer Correct Answer: C) Rest. 37. Three different objects m$_{1}$, m$_{2}$ and m$_{3}$ are allowed to fall from rest and from the same point O along three different frictionless paths. The speeds of the three objects, on reaching the ground, will be in the ratio of A) M$_{1}$:m$_{2}$:m$_{3}$. B) 1:1:1. C) M$_{1}$:m$_{2}$:m$_{3}$. D) 1/m$_{1}$:1/m$_{2}$:1/m$_{3}$. Show Answer Correct Answer: B) 1:1:1. 38. What is slope of v-t graph called? A) Deceleration. B) Acceleration. C) Decrease in velocity. D) None of the above. Show Answer Correct Answer: A) Deceleration. 39. What does slope of position time graph give? A) (a) speed. B) (b) acceleration. C) (c)uniform speed. D) Both (a) and (c) depending upon the type of graph. Show Answer Correct Answer: A) (a) speed. 40. Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds. A) 0.43 m/s. B) 1, 279.8 m/s. C) 1.21 m/s. D) 4.08 m/s. Show Answer Correct Answer: A) 0.43 m/s. 41. How long will your trip take (in hours) if you travel 350 km at an average speed of 80 km/hr? A) 4.38 hours. B) 6. C) .22 hours. D) 80 hours. Show Answer Correct Answer: A) 4.38 hours. 42. The numerical ratio of distance to displacement is always A) Less than or equal to 1. B) More than 1. C) Equal to one. D) More than or equal to 1. Show Answer Correct Answer: D) More than or equal to 1. 43. Vector quantities need both a magnitude and a ..... A) Distance. B) Displacement. C) Velocity. D) Direction. Show Answer Correct Answer: D) Direction. 44. Distance is a ..... quantity A) Vector. B) Scalar. C) Both. D) None. Show Answer Correct Answer: B) Scalar. 45. The SI unit for acceleration is A) Km. B) M/s. C) Mph. D) M/s$^{2}$. Show Answer Correct Answer: D) M/s$^{2}$. 46. A cyclist riding a bicycle at a constant speed of 10 m/ s on a circular track. The cyclist completes the three rounds of a track in 6 minutes. What is the radius of the circular track? (a) 191 m (b) 573 m (c) 1200 m (d) 3600 m A) D. B) A. C) B. D) C. Show Answer Correct Answer: B) A. 47. Uniform circular motion which quantity is uniform A) Velocity. B) Acceleration. C) Speed. D) Displacement. Show Answer Correct Answer: C) Speed. 48. A ball is rolled at a velocity of 12 m/sec. After 36 seconds, it comes to a stop. What is the acceleration of the ball? A) -.33 m/s/s. B) 3 m/s/s. C) .33 m/s/s. D) -3 m/s/s. Show Answer Correct Answer: A) -.33 m/s/s. 49. Speed has a direction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 50. The Standard Units for Speed is? A) Ms (meters times seconds). B) M/s*kg (meters per second kilograms). C) M/s (meters per second). D) Mskg (meters times seconds kilograms). Show Answer Correct Answer: C) M/s (meters per second). 51. A ball is thrown vertically upwards. It rises to a height of 40 m and comes back to the thrower: A) The total distance covered by the ball is zero. B) The net displacement of the ball is zero. C) The displacement is 80 m. D) The displacement is 40 m. Show Answer Correct Answer: B) The net displacement of the ball is zero. 52. If a body goes from A to B with a velocity of 20 m/s and comes back from B to A with a velocity of 30 m/s, what is the average velocity of the body during the whole journey? A) $20\\\frac{m}{s}$. B) $30\\frac{m}{s}$. C) $24\\frac{m}{s}$. D) $30\\frac{m}{s}$. Show Answer Correct Answer: C) $24\\frac{m}{s}$. 53. A description of the speed and direction of an object's motion A) Velocity. B) Acceleration. C) Speed. D) Vector. Show Answer Correct Answer: A) Velocity. 54. The nature of s-t graph for rest- A) Straight line passing through origin. B) Straight line parallel to time axis. C) Straight line perpendicular to time axis. D) Straight line overlapping time axis. Show Answer Correct Answer: B) Straight line parallel to time axis. 55. How is displacement different from distance? A) Displacement is a vector, it must have magnitude and direction. B) Displacement is a vector, it must have magnitude only. C) Displacement is a scalar, it must have magnitude and direction. D) Displacement is a scalar, it must have magnitude only. Show Answer Correct Answer: A) Displacement is a vector, it must have magnitude and direction. 56. A measurement of how fast an object is moving A) Acceleration. B) Speed. C) Velocity. D) Vector. Show Answer Correct Answer: B) Speed. 57. Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms-1 It implies that the boy is ..... A) In accelerated motion. B) At rest. C) Moving with no acceleration. D) Moving with uniform velocity. Show Answer Correct Answer: A) In accelerated motion. 58. Calculate the speed of a sprinter who ran 200 meters in 20 seconds. A) 10m/s. B) 10km/hr. C) 10km/s. D) 10m/hr. Show Answer Correct Answer: A) 10m/s. 59. If a bus decreases its speed from 80 km/h to 60m/h, then its retardation is A) 11.1 ms$^{-2 }$. B) -1.11 ms$^{-2}$. C) 111 ms$^{-2}$. D) 1.11ms$^{-2 }$. Show Answer Correct Answer: D) 1.11ms$^{-2 }$. 60. If a body starts from rest, what can be said about the acceleration of body? A) Positively accelerated. B) Negatively accelerated. C) Uniformly accelerated. D) None of the above. Show Answer Correct Answer: A) Positively accelerated. 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