# MCQ Class 9 Science Chapter 8 Motion

Solve these Motion MCQ Class 9 PDF Questions with answers. These MCQ Questions for Class 9 Motion are prepared by our expert teachers according to the latest syllabus of the CBSE Board. We have provided you Class 9 Motion MCQ with answers to help students to make their preparation better.

Please refer to the MCQ Questions for Class 9 Science Chapter 8 Motion. The following Motion Class 9 Science MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 9. Our experts have designed MCQ Questions for Class 9 Science with Answers for all chapters in your NCERT Class 9 Science book.

## Motion Class 9 MCQ Questions with Answers

See below Motion Class 9 Science MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. A particle is moving in a circular path of radius r. The displacement after half a circle would be :
(a) 0
(b) πr
(c) 2r
(d) 2πr

c

Question. When a car runs on a circular track with a uniform speed, its velocity is said to be changing. This is because :
(a) the car has a uniform acceleration
(b) the direction of car varies continuously
(c) the car travels unequal distances in equal time intervals
(d) the car travels equal distances in unequal time intervals

B

Question. Which of the following statement is correct regarding velocity and speed of a moving body ?
(a) velocity of a moving body is always higher than its speed
(b) speed of a moving body is always higher than its velocity
(c) speed of a moving body is its velocity in a given direction
(d) velocity of a moving body is its speed in a given direction

D

Question. The numerical ratio of displacement to distance for a moving object is :
(a) always less than 1
(b) equal to 1 or more than 1
(c) always more than 1
(d) equal to 1 or less than 1

D

Question. In which of the following cases of motion, the distance moved and the magnitude of displacement are equal ?
(a) if the car is moving on straight road
(b) if the car is moving on circular road
(c) if the pendulum is moving to and fro
(d) if a planet is moving around the sun

A

Question. A boy is sitting on a merry-go-round which is moving with a constant speed of 10 m s–1. This means that the boy is :
(a) at rest
(b) moving with no acceleration
(c) in accelerated motion
(d) moving with uniform velocity

C

Question. The speed of a moving object is determined to be 0.06 m/s. This speed is equal to :
(a) 2.16 km/h
(b) 1.08 km/h
(c) 0.216 km/h
(d) 0.0216 km/h

D

Question. Which of the following can sometimes be ‘zero’ for a moving body ?
(i) average velocity
(ii) distance travelled
(iii) average speed
(iv) displacement

(a) only (i)
(b) (i) and (ii)
(c) (i) and (iv)
(d) only (iv)

C

Question. Which of the following could not be a unit of speed ?
(a) km/h
(b) s/m
(c) m/s
(d) mm s–1

B

Question. A freely falling object travels 4.9 m in 1st second, 14.7 m in 2nd second, 24.5 m in 3rd second, and so on. This data shows that the motion of a freely falling object is a case of :
(a) uniform motion
(b) uniform acceleration
(c) no acceleration
(d) uniform velocity

B

Question. When a car driver travelling at a speed of 10 m/s applies brakes and brings the car to rest in 20 s, then retardation will be :
(a) + 2 m/s2
(b) – 2 m/s2
(c) – 0.5 m/s2
(d) + 0.5 m/s2

D

Question. Which of the following could not be a unit of acceleration ?
(a) km/s2
(b) cm s–2
(c) km/s
(d) m/s2

C

Question. One of the following is not a vector quantity. This one is :
(a) displacement
(b) speed
(c) acceleration
(d) velocity

B

Question. Change the speed of 6 m/s into km/h.

21.6 km/h

Question.  What is the other name of negative acceleration ?

Retardation (or Deceleration)

Question. Name the physical quantity whose SI unit is :
(a) m/s (b) m/s2

(a) Speed (or Velocity)
(b) Acceleration

Question. Name the physical quantity obtained by dividing ‘Distance travelled’ by ‘Time taken’ to travel that distance.

Speed

Question. In addition to speed, what else should we know to predict the position of a moving body ?

Direction of speed

Question. Which of the two can be zero under certain conditions : average speed of a moving body or average velocity of a moving body ?

Average velocity

Question. What is the acceleration of a body moving with uniform velocity ?

Zero (0)

Question. Under which condition is the magnitude of average velocity equal to average speed ?

When the body moves along a straight line path

Question. Name the physical quantity which gives us an idea of how slow or fast a body is moving.

Speed

Question. Under what conditions can a body travel a certain distance and yet its resultant displacement be zero ?

When the body comes back to its starting point

Fill in the following blanks with suitable words :

Question. Acceleration is the rate of change of…………… It is measured in …………….

velocity ; m/s2

Question. The physical quantity which gives both, the speed and direction of motion of a body is called its…………

velocity

Question. Velocity is the rate of change of …………………It is measured in ………………

displacement ; m/s

Question. Displacement is a ……………….. quantity whereas distance is a …………………. quantity.