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m = 2 kg
h = 200m
g = 10 m/s²
t = 2s
W = ...?
Jawab :
s = h = 1/2gt²
s = h = 1/2 × 10 × 2² --> 20 meter
W = F . s
W = ( m . g ) h
W = ( 2 . 10 ) 20
W = 400 Joule