Jawabanmu

2014-08-30T18:19:06+07:00
180 Km / jam = 180 x 1000/3600 = 50m/s
Jawaban paling cerdas!
2014-08-30T18:19:44+07:00
180 km/jam = 180.000 m/3600 s
180 km/jam = 50 m/s (a)