Question

A car speed up from 14m/s to 20m/s in 3s. if its mass is 1200 kg what force must its engine provide?
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Answer 1

Ответ:

1200 H

Объяснение:

F=m×a

a = (v2-v1)/t; a = (20-14)/3 = 2м/с²

F= 1200×2=2400 H