Check up only correct statement in the following :-

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3-2.Motion in Plane

easy

Check up the only correct statement in the following :-

AA body has a constant velocity and still it can have a varying speed.

BA body has a constant speed but it can have a varying velocity.

CA body having constant speed cannot have any acceleration.

DA body in motion under a force acting upon it must always have work done upon it.

Solution

When a body possesses constant velocity, both its magnitude (i.e., seed) and direction must remain constant. On the other hand, if the speed of a body is constant, then its velocity may or may not remain constant. For example, in uniform circular motion, through the speed of a body remains constant, velocity changes from point to point due to a change in direction. A body moving with a constant speed along a circular path constantly experiences a centripetal acceleration.

Standard 11

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(AIPMT-1990)

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hard

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medium

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medium

Check up the only correct statement in the following :-

Solution

Similar Questions

A particle moves in a circular path of radius $r$ with speed $v.$ It then increases its speed to $2\,v$ while travelling along the same circular path. The centripetal acceleration of the particle has changed by a factor of

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