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 m/s
. Which of the following statements is (are) correct for the system of two masses ?
- Total momentum of the system is 7 kg ms−1.
- Momentum of 5 kg mass after collision is 5 kg ms−1.
- Velocity of 5 kg after collision is 1 m/s.
- Velocity of 1 kg before collision is 2 m/s.