Question

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An object of mass 100 kg is accelerated uniformly with the velocity of 5 metre per second to 8 metre per second in 6 seconds. Calculate the initial and the final momentum of the object and find the magnitude of force exerted on the object.​

Answer 1

Answer:

mass of the object = 100 kg.

time taken = 6 sec.

initial velocity = 5 m/s.

final velocity = 8 m/s.

initial momentum of the object = 100*5=500 kg.m/s.

final momentum of the object =  100*8=800 kg.m/s.

force required = rate of change of momentum / time taken.

force=(800 - 500) / 6

force=300/6

force= 50 N.

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Explanation:

Answer 2

Answer:

Initial momentum=mass*initial velocity=(100*5)=500kg m/s

Final momentum=mass*final velocity=(100*8)=800 kg m/s

Force=Rate of change of momentum

Force=m(v-u)/t

=100(8-5)/6

=100*3/6=50 N

Explanation:

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