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Verified answer
Diket :Vo = 54 km/jam = 15 m/s
Tempat = 20m
g = 10m/s
Jawab :
GVA :
h = vo^2/2g
h = 15^2/2(10)
h = 225/20
h = 11,25 m
t = vo/g
t = 15/10
t = 1,5 detik
GJB :
t = akar 2h/g
t = akar 2(20+11,25)/10
t = akar 62,5/10
t = akar 6,25
t = 2,5 detik
Waktu total :
1,5 + 2,5 = 4 detik