041 a-How much work is done by the horizontal force F1=150N ona the 20 Kg block when the force pushes the block 5 m up the 30* F1 b- How much work is done by the gravitational force on block during the displacement? c-How much work is done by normal force? 30 d- What is the speed of the block (assume that is zero initially)after this displacement?
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