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m = 1.800 gram = 1,8 kg
g = 10 m/s²
t = 4 s
s = 2 m
ditanyakan : P ?
dijawab :
W = F x s
= (mxg) x s
= (1,8 x 10) x 2
= 18 x 2
= 36 J
jadi daya yg digunakan :
P = Wt
= 36 / 4
= 9 watt