A ball of mass 10g is moving with a velocity of 50 ms−1. On applying a constant force on ball for 2s, it acquires a velocity of 70 ms−1. Calculate the rate of change of momentum.
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Answer:
mass =10g=
1000
10
=10
−2
kg
Initial velocity, u=50ms
−1
Initial momentum = mass × Initial velocity
=10
−2
×50
=0⋅5kgms
−1
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