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dik :
m = 125 g = 125/1000 = 0,125 kg
F = 5 N
Fg diabaikan
dit : a ?
dijawab :
a = F/m
= 5/0,125
= 40 m/s²
no. 7
dik ;
Vo = 20 m/s
Vt = 80 m/s
t = 0,04 s
m = 500 gram = 0,5 kg
dit : F ?
dijawab :
a = (Vt-Vo)/t
= (80-20)/0,04
= 60/0,04
= 1.500 m/s²
jadi :
F = mx a
= 0,5 x 1.500
= 750 N