Question

An object of mass 100 kg is accelerated uniformly from a velocity of 5 ms–1 to 8 ms–1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the objec

Answer 1

Vi =5m/s
Vf = 8m/s
t = 6s

m = 100kg

Initial momentum = m* Vi

= 100*5

= 500kg.m/s

Final momentum = m* Vf

= 100*8

= 800kg.m/s

Now for finding force first find acceleration.

a = (Vf - Vi) / t

= (8 - 5) / 6

= 3/6 = 0.5m/s^2

Force = mass * acceleration

= 100 * 0.5

= 50m/s^2



REGARDS

Answer 2

☺ Hello mate__ ❤

◾◾here is your answer...

u = 5 m/s

v = 8 m/s

m = 100 kg

t = 6 s

Initial momentum = mu = 100 × 5 = 500 kg ms-1 Final momentum = mv= 100 × 8 = 800 kg ms-1

Force exerted on the object,

= (mv−mu)/ t

= 800 - 600 / 6

= 300 / 6

= 50 N

Hence, Force exerted on the object is 50 N.

I hope, this will help you.

Thank you______❤

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