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vo = 15 m/s
ditanyakan:
h = ?
t = ?
jawab :
vt² = vo² - 2gh
0 = 15² - 2(10)h
20 h =225
h = 225/20
h = 11,25 m
vt = vo - gt
0 = 15 - 10t
10 t = 15
t = 1,5 s