A ball of mass 1kg is dropped from a height. Find the work done by it weight in 1sec after the ball is dropped
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Given: m = 1 kg
g = 9.8 m/s^2 , t= 1 sec , u = 0 m/s
F = mg = 1 × 9.8 = 9.8 N
s = ut + 1/2 gt^2
= 0×1 + 1/2 ×9.8 × 1^2 = 4.9 m
W = Fs = 9.8 × 4.9= 48.02 J
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