Question

A force of 285 N acts on a body of mass 45 kg for 7 s, initially at rest. Find:

(i) the velocity acquired by the body and

(ii) the change in momentum of the body​

Answer 1

From Newton's second law of motion,
F=m×a
Here, Force, F = 15 N and Mass, m = 2 kg
Therefore, 15=2×a
Hence, a=7.5m/s 2


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