Jawabanmu

2014-05-30T17:43:56+07:00
S= V x T
  = 1400 m/s x 2 sekon
  = 2800 m

2014-05-30T18:14:18+07:00
Jarak (s) = (v.t) : 2
s = 1400 x 2) : 2
s = 2800 : 2
s = 1400
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