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Q.

Which of the following four statements is false?

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a

A body can have a constant velocity and still have a varying speed

b

A body can have a constant speed and still have a varying velocity

c

A body can have zero velocity and still be accelerated

d

The direction of the velocity of a body can change when its acceleration is constant  

answer is B.

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Detailed Solution

A body can have zero velocity and still be accelerated (eg. Particle performing SHM at its extreme position)

Constant velocity means both direction and speed are constant.

A body can have a constant speed and still have a varying velocity (eg. Particle doing uniform circular motion)

The direction of the velocity of a body can change when its acceleration is constant (eg. Oblique projection)

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