Jawabanmu

2014-08-20T18:13:39+07:00
2 jam = 7200 s 
7200 x 10 = 72000 m = 72 km
2014-08-20T18:14:25+07:00
S= v.t
  = 10×2×3600
  = 72.000 m
  = 72 km