Question

An object of mass 100kg is accelerated uniformly from a velocity of 5m/s to 8m/s in 6s. Calculate the initial and final momentum of the object.
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Answer 1

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Given:-

u= 5m/s

v= 8m/s

m= 100kg

t= 6s

mu= 100×5 = 500kg m/s

mv= 100×8 = 800kg m/s

F = mv-mu/t

= m(v-u) /t

= 800-500/6

= 300/6

= 50N

Answer 2

Answer:

u= 5m/s

v= 8m/s

m= 100kg

t= 6s

mu= 100×5 = 500kg m/s

mv= 100×8 = 800kg m/s

F = mv-mu/t

= m(v-u) /t

= 800-500/6

= 300/6

= 50N

Explanation: