Starting from rest, a 5.00-kg block slides 2.50 m down a rough 30.0 incline. The coeffi cient of kinetic friction between the block and the incline is mk 0.436. Deter- mine (a) the work done by the force of gravity, (b) the work done by the friction force between block and incline, and (c) the work done by the normal force. (d) Qualita- tively, how would the answers change if a shorter ramp at a steeper angle were used to span the same vertical height?

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