Jawabanmu

2014-08-29T22:17:11+07:00
Kalikan 1000/3600 Jadi :
5000/3600 = 50/36 = 1,389m/s
klo menurutku 5 mtr = 5/1000 km dan 1 sekon = 1/3600 jam jd hasilnya 5/1000:1/3600 =18000/1000 =18km/jam
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2014-08-29T22:33:30+07:00