# 60+ MOTION CLASS 9 MCQ: Online Test (Quiz)

MOTION CLASS 9 MCQ: Online Test (Quiz): Chapter Motion helps to understand the motion of objects in a straight line. It teaches the students about the various equations through which solving numerical becomes easy. It also helps students to distinguish between a scalar and vector quantity. While summing up the motion in a straight line, the chapter briefly talks about circular motion.

## 60+ MOTION CLASS 9 MCQ: Online Test (Quiz)

**1.** **If a particle moves in a circular path of r radius, what would be the displacement after moving half the circle?**

a) 2r

b) 0

c) r

d) πr

**2.** **Speed is defined as**

a) distance per time

b) power per time

c) weight per time

d) time per distance

3. **If a girl is riding a bicycle with a uniform speed of 15km/h, which of these statements are true?**

a) The acceleration is 15 km/h^2

b) There is no acceleration

c) The girl is moving with accelerated motion

d) There is no motion at all

**4. If you draw a distance-time graph with time on the x-axis and distance on the y-axis, what will the slope signify?**

a) acceleration

b) speed

c) energy

d) power

**5. A free-falling object has a constant non-zero acceleration. Is this a justified fact?**

a) Yes

b) No

c) Undefined

d) None of these

**6. Which of these is a vector quantity**

a) Velocity

b) Displacement

c) Speed

d) Both a & b

**7. A child is running around a circular park of radius r. He started running from point A and revolved twice around the borders of the park and stopped at the same point A. What is his displacement?**

a) 2πr

b) πr

c) 0

d) None of these

**8. What is the SI unit of Acceleration?**

a) meter

b) meter/ second x second

c) Kilometres/ hour x hour

d) second

**9. What is the physical quantity which is described only by its magnitude called?**

a) Vector quantity

b) Scalar quantity

c) Rectangular quantity

d) Circular quantity

**10. When you draw a v-t graph, the area under it is represented by a physical quantity. What is its unit?**

a) m^{2}

b) s^{2}

c) m/s

d) m

**11. What is the difference between speed and velocity?**

a) Speed is a scalar quantity, velocity is a vector quantity

b) Speed is a vector quantity, velocity is a scalar quantity

c) The difference between the acceleration of a moving object and its speed is velocity

d) There is no difference between speed and velocity

**12. A moving car decreases its velocity from 80km/h to 60km/h in 5 seconds. What is its acceleration?**

a) 12.66 ms^{-2}

b) -1.112 ms^{-2}

c) 1.112 ms^{-2}

d) -12.66 ms^{-2}

**13. When can displacement be zero?**

a) When an object does not move from its initial position

b) When the initial position and final position are the same.

c) Both a and b

d) None of these

**14. Which of the following statement is true for the nature of the distance-time graphs for the uniform motion of an object?**

a) The distance-time graph for uniform motion is always a curved line.

b) The distance-time graph for uniform motion is always a straight line.

c) The distance-time graph for uniform motion can sometimes be a straight line and sometimes be a curved line.

d) The slope of the distance-time graph is parallel to the time axis.

**15. For an object in motion, what is the numerical ratio of displacement to distance?**

a) Always equal to 0

b) Always equal to 1

c) Always less than 0

d) Always less than 1

**16. When can the distance and the magnitude of displacement of an object be the same?**

a) When it moves on a circular path

b) When it moves with a uniform velocity

c) When it moves on a straight line

d) When it is at rest

**17. A boy travels from x to y at a velocity of 20 m/min and returns from y to x at a velocity of 30 m/min. The boy’s average velocity during the journey is**

a) 20m/min

b) 10m/min

c) 24m/min

d) 33m/min

**18. When an object is at rest, the slope of the distance-time graph is?**

a) Parallel to the time axis

b) Parallel to the distance axis

c) A curved line

d) A straight line

**19. If a body is raised vertically from the ground, taking the vertically upward direction as positive and the point of projection as the origin, what is the sign of the body’s displacement from the origin while it is at height h during the upward and downward journey?**

a) Both will be positive

b) Both will be negative

c) Positive and Negative respectively

d) Negative and positive respectively

**20. If an object has moved distance s with an initial velocity u and final velocity v with acceleration a, which of the below equation is correct?**

a) 2as= v^{2 }– u^{2}

b) 2a = v-u

c) a= (v-u)/s

d) s= 2av- u

**21. In 5 minutes, a train moving at rest can reach a speed of 72 km/h. Determine the acceleration assuming uniform acceleration.**

a) 15 m/s^{2}

b) 1/15 m/s^{2}

c) 10 m/s^{2}

d) 1/10 m/s^{2}

**22. If an athlete completes a revolution in a circular path of radius r in time t, what is his velocity?**

a) 2πr

b) (2πr)/t

c) πr/t

d) πr^{2}/t

**23. The motion of an object in a circular path with uniform speed is referred to as**

a) Straight Motion

b) Cylindrical motion

c) Circular motion

d) Hexagonal motion

**24. A train is moving at 90 km/h–1. Brakes are applied so that a constant acceleration of –0.5 m s-2 is produced. Determine how far the train will go before coming to a halt.**

a) 525 m

b) 100 m

c) 6025 m

d) None of these

**25. When can the magnitude of speed and velocity be the same?**

a) Never

b) Always

c) When an object is at rest

d) None of these

**26. What is the term used for negative acceleration?**

a) Deaccelaration

b) Back acceleration

c) Retardation

d) Recession

**27. Vector quantity has**

a) Only magnitude

b) Magnitude and direction

c) Only direction

d) None of these

**28. What is the SI Unit of Distance and Displacement**

a) Meter and Kilometer respectively

b) Meter

c) Mile

d) Kilometer

**29. When can a body has acceleration while moving at a constant speed?**

a) While moving on a straight road

b) While moving in a helical path

c) While moving on a circular path

d) All of these

**30. A body travels the first 20 meters in 5 seconds and the next 40 meters in another 5 seconds. Determine the average speed of the body.**

a) 5m/s

b) 10m/s

c) 6m/s

d) 0

**31. Physical quantity obtained by dividing the distance traveled by the time taken is**

a) displacement

b) velocity

c) Speed

d) Acceleration

**32. Which of the following examples is not a uniform motion?**

a) Motion of a card on a straight road

b) Motion of an airplane

c) Movement of an asteroid

d) All of the above

**33. When the direction of speed is mentioned, what is it called?**

a) Acceleration

b) Velocity

c) Speed

d) Centripetal force

**34. Speed 6m/s is equal to**

a) 21.6 km/h

b) 20 km/h

c) 6km/h

d) 6 m/s^{2}

**35. What is the use of an Odometer?**

a) To Measure the distance traveled by a car

b) To measure the speed of a car

c) Both a and b

d) None of these

**36. Which physical quantity shows how fast or slow a body is moving in a particular direction?**

a) Speed

b) Velocity

c) Acceleration

d) Power

**37. In addition to the distance, which physical quantity is needed to calculate the speed of an object?**

a) displacement

b) heat

c) energy

d) Time

**38. When can acceleration be zero?**

a) When the initial and final velocity is the same

b) When the body is at rest

c) When the difference between the initial and final velocity is 1

d) None of these

**39. Acceleration is**

a) A scalar quantity

b) A vector quantity

c) Both a and b

d) None of these

**40. Which two scientists established the phenomena of motion on the credible scientific ground?**

a) Galileo Galilei and Isaac Newton

b) Albert Einstein and Isaac Newton

c) Stephen Hawkings and Albert Einstein

d) Thomas Edward and Wright Brothers

**41. What is meant by 10 m/s ^{2}?**

a) The velocity of a body decreases by 10m/s every second

b) The speed of a body increases by 10m/s every second

c) The velocity of a body increases by 10m/s every second

d) The velocity of a body is constant at 10m/s

**42. Choose the equation which gives a relation between linear velocity and angular velocity.**

a) Linear Velocity= Time x Angular velocity

b) Angular Velocity= Linear Velocity x Radius of circular path

c) Angular Velocity = Time x Linear velocity

d) Linear velocity = Angular velocity × Radius of circular path

**43. What is the simplest type of motion?**

a) Motion on a circular path

b) Free falling motion

c) Motion on a straight line

d) Object at rest

**44. Displacement is always______the distance.**

a) Equal to

b) Greater than

c) Less than

d) Proportional to

**45. Speedometer is used for**

a) Calculating the instantaneous speed of a moving object

b) Constant Speed of a moving car

c) Measuring the Average speed

d) All of these

**46. When can the speed and velocity of a moving body be different?**

a) When the body moves on a straight path

b) When the body is thrown upward against gravity

c) When the body is at rest

d) When the body moves on a circular path

**47. When is acceleration negative?**

a) When the velocity of a moving body decreases with time

b) When there is a constant velocity

c) When the body is at rest

d) None of these

**48. which of the following options is an example of a body that appears to be moving to one person and stationary to another person.**

a) Movement of an asteroid

b) Motion of the river water

c) Objects visible to a person from a moving bus

d) All of these

**49. Which of the following is not a use of the distance-time graph?**

a) It tells us about the position of the body at any instant in time.

b) From the graph, we can see the distance covered by the body during a particular interval of time.

c) It also gives us information about the velocity of the body at any instant in time.

d) It gives us the amount of energy used for movement of the body.

**50. Another name for a curve in a distance-time graph is**

a) Bend

b) Vacuum

c) Parabola

d) Resultant

**51. Which of the following equation is correct?**

a) v= u + at

b) u= v+ at

c) a= u + vt

d) t= a + u + v

**52. Which of the following equation is correction?**

a) a= v+us

b) 2a = (v+u)/s

c) 2as= v^{2}-u^{2}

d) 2as= v-u

**53. Which of these is an example of a controlled motion?**

a) Hydroelectric power

b) Hurricane

c) Tsunami

d) Flood

**54. If a body completes one revolution around a circular track, what will be the distance he has covered?**

a) Area of the circle

b) Radius of the circle

c) Diameter of the circle

d) Circumference of the circle

**55. Which of the following equation can help us to find the distance(s) travelled by an object?**

a) s = ut + ^{1}/_{2 }at^{2}

b) s= ut + at

c) s= (v-u)/t

d) s= vt-ut

**56. The rate of change of displacement is**

a) Speed

b) Acceleration

c) Velocity

d) Torque

**57. A free-falling object exhibits**

a) Uniform motion

b) Non- uniform motion

c) Rectilinear motion

d) Circular motion

**58. Bus A travels 400 km in 6 hours and bus B travels 420 km in 7 hours. Which bus moves faster?**

a) Bus A

b) Bus B

c) Both are moving with the same speed

d) None of these

**59. Formula for acceleration (a), where initial velocity is u, final velocity is v and time t**

a) a= v-u

b) a= (v-u)/ t

c) a= v-ut

d) a= v/t

**60. If a snail moves 100 meters in 50 hours, what is its speed?**

a) 2km/h

b) 0.002 km/h

c) 0.02 km/h

d) 0.2 km/h

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