Jawabanmu

2014-09-10T23:06:23+07:00
Cmn bsa jwb 3. gpp ya.
1. 10 m/s
2. v=68 km/jam
= 17/9 m/s
t=15 mnit=900 sekon
s=v*t
= 17/9 * 900 = 0,17 m

3. v=90 km/jam = 25 m/s
t=70 sekon
s=v*t
= 25*70= 1750 m.