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A body of mass 2 kg is pulled with a vel...

A body of mass 2 kg is pulled with a velocity `2 m cdot s^(-1)` on horizontal surface. What will be the heat produced in 5s, if the coefficient of friction between the body and the surface is 0.2? Given, `J = 4.2 J cdot cal^(-1) , g = 9.8 m cdot s^(-2)`.

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