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Impulse and Momentum question

2010 · Shift 1 · Q59
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Impulse and Momentum question

2010 · Shift 1 · Q59

JEE AdvancedPhysicsImpulse and MomentumMultiple correct+3 / −0.75
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−1. Which of the following statement(s) is (are) correct for the system of these two masses?
  1. A
    Total momentum of the system is 3 kg ms−1
  2. B
    Momentum of 5 kg mass after collision is 4 kg ms−1
  3. C
    Kinetic energy of the centre of mass is 0.75 J
  4. D
    Total kinetic energy of the system is 4 J
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