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v= 8 m/s
Ek= 128 Joule
ditanya
m=...?
jawab
Ek= 1/2.mv²
128= 1/2.m(8)²
256= 64m
m= 256/64
m= 4 kg
v= 8 m/s
Dit = m??
Jwb= Ek= 1/2 mv^2
128 = 1/2.m.8^2
128 = 1/2 m 64
128 = 32 m
m = 128/32 = 4 kg