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t1 = 2,5s , t2 = 3,5s
Dit : St, perpindahan, Kelajuan, kecepatan.
penyelesaian :
a. St = S2+ S1 = 90+70 = 160m
b. Perpindahan = S2-S1 = 20m
c. v = s/t = S2+S1 / t2-t1 = 90+70 / 3,5-2,5
= 160/1 = 160m/s
d. v = s/t = S2-S1 / t2-t1 = 90-70 / 3,5-2,5
= 20/1 = 20m/s