Jawabanmu

2014-03-11T16:22:12+07:00
Termasuk GLB
V = s/t
diket V=5 m/s
         s = a.5 km = 5000 m
              b.400 km = 400000 m
a.t = s/v
    5000/5 = 1000 sekon
b.t = s/v
    400000/5 =80000 sekon

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