Jawabanmu

2014-02-05T16:48:14+07:00
2 menit - 1 km
2 menit - 3 km
1 menit - 2 km
rata rata = 1+3+2 per 2+2+1 = 6 per 5 = 1,2 km/menit = 72 km/jam
2 4 2
2014-02-05T16:56:30+07:00
Dik : S1 = 1 km = 1000 m, S2 = 3km = 3000m, S3 = 2km = 2000m
       t1 = 2 menit = 120 sekon, t2 = 2 menit = 120 sekon , t3 = 1 menit= 60 sekond
Dit : v?
Penye :
v = s/t
= s1+s2+s3 / t1+t2+t3
= 1000+3000+2000 / 120+120+60
= 6000 / 300
= 20 m/s
3 5 3