An object of mass 'm' is moving with a velocity 'v' on a level ground. State the work done by a person who wants to stop the object. Justify your answer.

Asked by Sthitaprajna Mishra | 22nd Feb, 2014, 03:30: PM

Expert Answer:

The kinetic energy of a body moving with a certain velocity is equal to the work done on it to make it acquire that velocity.


The work done is equal to the change in the kinetic energy of an object.

Work done = Kinetic enegy = 1/2 mv2

Answered by  | 24th Feb, 2014, 11:40: AM

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