Question

A force acts on a body of mass 5 kg and changes its velocity from 8 m/s to 12 m/s in 4s , then the force is

Answer 1

Answer:

Given :-

Mass :- 5 kg

initial velocity = 8 m/s

final velocity = 12 m/s

Initial momentum = 8*5 = 40 kgm/s

final momentum = 12*5 = 60 kgm/s

Change in momentum = ∆P

= final omentum - initial momentum

= 60 - 40 = 20 kgm/s

Force = 20/4 = 5 N

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