Question

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Answer 1

Answer:

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Answer 2

Answer:

m1u1 + m2u2 = (m1+ m2)v

v= (m1u1 + m2u2)/(m1+ m2)

The kinetic energy of the masses before the collision is : K.E1 = 1/2  m1u21 + 1/2 m2u22

While kinetic energy after the collision is: K.E2 = 1/2 (m1+ m2) v2

But according to the law of conservation of energy: 1/2  m1u21 + 1/2 m2u22 = 1/2 (m1+ m2) v2 + Q

‘Q’ here is the change in energy that results in the production of heat or sound.