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 An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
 
The kinetic energy of an object of mass (\(m\)), moving with a velocity, (\(v\)) is given by the expression,
 
E=ii×i×ii
 
In order to bring it to rest, its velocity has  and object comes to rest.

Work done on the object to bring it to rest,