A point mass of 1 kg collides elastically with a stationary point mass of 5 kg....
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A point mass of 1 kg collides elastically with a stationary point mass of 5 kg. After their collision, the 1 kg mass reverses its direction and moves with a speed of 2 ms. Which of the following statement(s) is (are) correct for the system of these two masses? A) Total momentum of the system is 3 kg ms - B) Momentum of 5 kg mass after collision is 4 kg ms C) Kinetic energy of the centre of mass is 0.75 J D) Total kinetic energy of the system is 4J A point mass of 1 kg collides elastically with a stationary point mass of 5 kg. After their collision, the 1 kg mass reverses its direction and moves with a speed of 2 ms. Which of the following statement(s) is (are) correct for the system of these two masses? A) Total momentum of the system is 3 kg ms - B) Momentum of 5 kg mass after collision is 4 kg ms C) Kinetic energy of the centre of mass is 0.75 J D) Total kinetic energy of the system is 4J
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