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?
NCERT Class IX
Sciences - Main Course Book
Chapter 11. Work and Energy
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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
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
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