# Motion: The phenomenon in which an object changes its position over time.

This is an MCQ-based quiz on Motion.

This includes distance, velocity, acceleration, and momentum.

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Suppose a boy is enjoying a ride on a marry-go-round which is moving with a constant speed of 10 m/s. It implies that the boy is:

At rest Moving with no acceleration In accelerated motion Moving with uniform velocity

Which of the following can sometimes be ‘zero’ for a moving body? i. Average velocity ii. Distance travelled iii. Average speed iv. Displacement

Only (i) (i) and (ii) (i) and (iv) Only (iv)

Which of the following statement is correct regarding velocity and speed of a moving body?

Velocity of a moving body is always higher than its speed Speed of a moving body is always higher than its velocity Speed of a moving body is its velocity in a given direction Velocity of a moving body is its speed in a given direction

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:

+ 2 m/s2 − 2 m/s2 − 0.5 m/s2 + 0.5 m/s2

If the displacement of an object is proportional to square of time, then the object moves with

uniform velocity uniform acceleration increasing acceleration decreasing acceleration

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

at rest moving with no acceleration in accelerated motion moving with uniform velocity

The numerical ratio of displacement to distance for a moving object is

Always less than 1

Always equal to 1

Always more than 1

Equal or less than 1

The rate of change of velocity per second is known as:

acceleration speed average velocity linear motion

The unit of speed and velocity both is:

ms^-1 ms-^2 ms^2 ms

What is the unit of acceleration?

m/s m/s2 ms m/s3

The displacement of the object in a unit time is called:

Speed

Velocity

Acceleration

Average speed

A particle is moving in a circular path of radius r. The displacement after half a circle would be:

Zero

πr

2r

2πr

Which of the following situations is possible?

An object can have acceleration, but constant velocity. The velocity of an object may be zero but acceleration is not zero. Distance and the magnitude of displacement are equal in circular motion. Average speed and the magnitude of average velocity are always equal in circular motion.

The ratio of speed to the magnitude of velocity when the body is moving in one direction is

Less than one Greater than one Equal to one Greater than or equal to one

A body is projected vertically upward from the ground. Taking vertical upward direction as positive and point of projection as origin, the sign of displacement of the body from the origin when it is at height h during upward and downward journey will be

Positive, Positive

Positive, Negative

Negative, Negative

Negative, Positive

Quiz/Test Summary
Title: Motion: The phenomenon in which an object changes its position over time.
Questions: 15
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