Jawabanmu

2014-08-16T17:11:13+07:00
80*100/s =8000cm/s
72*1000/3600=72000/3600=20m/s
Jawaban paling cerdas!
2014-08-16T17:17:17+07:00
80 m/s = ... cm/s
= 80×100
= 8000 cm/s

72 km/jam = ... m/s
= 72 ×1000 = 72.000 = 20 m/s
     3600          3600
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