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A small body of mass m is located on a h...

A small body of mass m is located on a horizontal plane at the point O. The body of mass m is located on a horizontal plane at the point O. The body acquires a horizontal velocity `v_0`. Find,
(a) the mean power developed by the friction force during the whole time of motion, if the friction coefficient `k=0.27`, `m=1.0kg`, and `v_0=1.5m//s`,
(b) the maximum instantaneous power developed by the friction force, if the friction coefficient varies as `k=alphax`, where `alpha` is a constant, and x is the distance from the point O.

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