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Vo = 8 m/s
t = 40 s
S = 640 m
dijawab :
a.Kecepatan rata2 :
V = S/t
= 640/40
= 16 m/s
c. Percepatan :
S = Vot + 1/2 x a x t²
640 = 8x40 + 1/2 x a x 40²
640 = 320 + 800 a
800a = 640-320
a = 320/800
a = 0,4 m/s²
b. Kecepatn akhir :
Vt = Vo + a x t
= 8 + 0,4 x 40
= 8 + 16
= 24 m/s²