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= 63000/3600 m/s
= 17,5 m/s
t = 2 s
S = 23 m
Dit : V = ....?
Jwb: S = V₀t - 0,5.at²
1/2at² = V₀t - S
a = 2(V₀t -S)/t²
= 2(17,5 x 2 - 23)/4
= 2(12)/4
= 6 m/s²
V = V₀ - at
= 17,5 - 6.2
= 17,5 - 12
= 5,5 m/s