Test:128 QNo:2

A mass(cuboid shaped) at the top of a cliff starts to slide down. It has velocity initially of 1m/s.
The slope of the cliff is varying! But what is known is that the bottom of the cliff is 100 metres horizontally and 100 metres vertically from the top of the cliff!
What is the final Kinetic energy of the block, if the coefficient of friction is tanθ for any given slope θ

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