Jawabanmu

2014-08-30T21:50:07+07:00
36 km/jam = 10 m/s (v1)54 km/jam = 15 m/s (v2)2 second (t)a = (v2 - v1) : t   = (15 - 10) : 2   = 5 : 2   = 2,5 m/s2
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