Question: A 2 . 2 - kg block starts from rest on a rough inclined plane that makes an angle of 2 5 2 5 ^

A 2.2-kg block starts from rest on a rough inclined plane that makes an angle of 2525^\circ25 with the horizontal. The coefficient of kinetic friction is 0.250.250.25. As the block goes 2.0 m down the plane, the mechanical energy of the Earth-block system changes by:

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