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Net work done by the 110N force = F.dx = Fd[Assuming the force acts in a straight line]

=> W = 110*15 =

1650N[Work done in pusing the object]

Work done by the friction, Wf = 70* 15 = 1050 J

Here force applied by us in pushing will do two things, to overcome frictional force and to provide kinetic energy to the body. Hence

Net Kinetic Energy = W - Wf = 1650 - 1050 = 600 J

Find the energy turned into heat ??

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