Question

Calculate the change in momentum of a body if force of 15N acts on it for 6 seconds.
Also calculate the mass of the body, if the body starts from rest and attains the velocity
of 10ms-¹​

Answer 1

Answer:

Given,

Force (F) = 15 N

Time (t) = 6 seconds

Change in Momentum = Force*Time

= 15*6 kg.m/s

= 90 kg.m/s = Impulse

[Change in momentum is also called as Impulse]

Initial Momentum = mu = 0 kg.m/s  [as initial velocity is 0 m/s]

Final Momentum = mv = 10m kg.m/s

According to the equation,

= mv-mu = 90

= 10m = 90

= m = 9 kg

Answer: Change in Momentum is 90 kg.m/s and Mass is 9 kg.

I hope this helps.

Answer 2

Explanation:

m = 9

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