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Vo = 0m/s
d = 30m
Vf = 6m/s
a=?
t =?
Vf²= Vo² + 2ad
(Vf²-Vo) /2d = a
a = (6m/s)²-0/(2×30m)
a = 36m²/s²/ 60m
a = 0.6m/s²
d = (Vf+Vo)/2 ×t
t = 2d /Vf
t = 2×30m/6m/s
t = 60m/6m/s
t = 10s