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S = 10 x 8
= 80 m/ s^{2}
Vt = Vo + at
10 = 0 + a4
4a = 10
a = 10/4 = 2,5 m/s2
S = Vo t + 1/2 a t²
S = 0 + 1/2.10/4.4.4
S = 20m
Jarak saat 4-8 sekon.
S = V.t
S = 10.4
S = 40m
Jadi, jarak totalnya = 20 + 40 = 60m