Jawabanmu

2014-07-31T16:06:50+07:00
Rumus GLBB : S = Vo.t+1/2at kuadrat
72 km / jam = 72000m/3600s = 20 m/s
t = 2 menit = 2 . 60 s=120s
a = 5 m/s kuadrat
S = 20.120+1/2.5.120 kuadrat
=2400 + 36000
=38400 m

Vt = Vo + a.t
=20 + 5.120
=20 + 600
=6200 m/s