A man lifts a box weighing 50n to a height of 50m in25s how
A man lifts a box weighing 50N to a height of 50M in25s.
a) How much work did he do?
b) what power did he expend?
c) What is the mechanical energy at a height of 20M above the ground?
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a man lifts a box weighing 50n to a height of 50m in25sa how much work did he dob what power did he expendc what is the
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