physic

An object of mass m is at rest at the top of a smooth slope of height h and length L. The coefficient of kinetic friction between the object and the surface, μk, is small enough that the object will slide down the slope if given a very small push to get it started. Find an expression for the object's speed at the bottom of the slope in terms of the variables m, μk, L, h.

please help

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  1. sqrt(2g(h-μkL)

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  2. V=sqrt(2g(h-uk sqrt(L^2-h^2))

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