Social Sciences, asked by syedabutalhahus7975, 10 months ago

A body of mass 10 kg initially moving with speed 5 ms–1 changes its speed to 25 ms–1 in 4 sec. Calculate the change in momentum and hence force applied.

Answers

Answered by topwriters
3

Change in momentum = 200 kg m/s.

Force = 50 N

Explanation:

The change in momentum of an object is its mass times the change in its velocity.

Δp= m * (Δv) = m * (vf−vi)

Where p is the momentum, v is velocity and m is mass.

Change in momentum = mass * (final velocity - initial velocity )

= 10 (25 - 5)

= 200 kg m/s.

Force = d(mv)/dt = change in momentum / time = 200 / 4 = 50 N

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