Jawabanmu

2014-08-25T21:49:20+07:00
5 m/s = 18 km/jam
10 m/s = 36 km/jam
15 m/s = 54 km/ jam
3 4 3
2014-08-25T21:49:38+07:00
15 m : 1000 = 0.015 km/s
0.015 X 1/3600 = 0.0000041667 km/jam
2 4 2