Which combination of the following statements is wrong?
I. A body can have a constant speed but a varying velocity
II. A body can have a constant velocity but a varying speed
III. A body can have a zero velocity and finite acceleration.

III only

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II only

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I only

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None of these

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Solution

The correct option is A II only
Speed is a scalar quantity that only number and velocity is a vector which means having magnitude and direction both. In order to have constant velocity the speed needs to be constant. Whereas a body can have constant speed with changing direction (velocity).
When car going roundabout is the perfect example of this situation.

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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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