a body having mass of 5 kg is moving with the velocity of 20 m/s.In 5 seconds, its velocity is increased to 30 m/s. Calculate the change in momentum and hence calculate the necessary external force.
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Answer:
force=10 newton
Explanation:
acceleration=v-u/t
a=30-20/5=2m/s2
therefore force=ma
5*2=10newton
i am not sure about the momentum so i havent written it.
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