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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?

Sciences - Main Course Book

Chapter 11. Work and Energy


At the time of rest kinetic energy of the object will b 0
while moving kinetic energy of the object = mv²/2 
so we must do a work of magnitude mv²/2 against the motion of the body
0 0 0
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