Which one among the following statements is incorrect?

A body having a constant velocity has zero acceleration.

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A body having a constant speed can have a varying velocity.

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A body having a constant speed can have some acceleration.

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A body in motion under a force must have some work done upon it.

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Solution

The correct option is D A body in motion under a force must have some work done upon it.
Work done may be zero if force is perpendicular to displacement.

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Similar questions

Mark the correct statement(s)
(1) If speed of a body is varying, its velocity must be varying and it must have non-zero acceleration.

(2) If velocity of a body is varying, its speed must be varying.

(3) A body moving with varying velocity may have constant speed.

(4) A body moving with varying speed may have constant velocity, if its direction of motion remains constant.

can a body have constant acceleration but zero velocity

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