A green puck with mass 10 kg strikes a stationary yellow puck with mass 10 kg. The green puck was moving at a velocity of 7i - 6j m/s, and its center was at (1, 2) when it hit the yellow puck. Which of the following could be the velocities of the pucks after the collision? (Assume the collision is elastic.)

Question

Luciana Flores

Physics

3 February, 13:14

A green puck with mass 10 kg strikes a stationary yellow puck with mass 10 kg. The green puck was moving at a velocity of 7i - 6j m/s, and its center was at (1, 2) when it hit the yellow puck. Which of the following could be the velocities of the pucks after the collision? (Assume the collision is elastic.)

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Caleb Bolton · Answer 1

Momentum is conserved. If the two pucks hit dead center, no angular momentum is induced. Since both pucks have the same mass and the collision is elastic, all momentum is transferred. The green puck will become stationary and the yellow puck will pick up the velocity of the green one.