Jawabanmu

2014-06-14T12:48:16+07:00
A) Vrt = J/t = 30/(1/3) = 90 km/jam
b)  Vt = Vo + a .t
= 40 + 300 . 1/3
= 140 km/jam
c) S = V₀.t + 1/2 . a . t²
30 = 40.(1/3) + 1/2 . a . (1/3)²
30 = 40/3 + a/18
300 km/jam²

cara kerja 1,3,2
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