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Diketahui :
m = 500 gr = 0,5 kg
h = 90 cm = 0,9 m
g = 10 m/s2
Ditanyakan : W ?
Dijawab :
W = F x h
= mxg x h
= 0,5 x 10 x 0,9
= 4,5 J
Nomor 6
Dketahui :
s = 85 m
t = 0,5 s
Ditanyakn: v?
Dijawab :
s = 1/2 x v x t
85 = 1/2 x v x 0,5
85 = 0,25 x t
t = 85/0,25
t = 340 m/s
jawaban B