Jawabanmu

Jawaban paling cerdas!
2014-01-13T19:22:48+07:00
Jawabannya 10 km/jam
2014-01-13T19:37:19+07:00
Diket:
s= 20 km = 20000 m
t= 30 menit = 1800 s
ditanya: v...?
jawab:
v = s/t
=20000/1800
= 11 m/s