Thank you for helping me to understanding the concept in working this practice problem out.
The image shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0280 kg and is moving along the x axis with a velocity of +4.76 m/s. It makes a collision with puck B, which has a mass of 0.0560 kg and is initially at rest. The collision is not head-on. After the collision, the two pucks fly apart with the angles shown in the drawing. Find the speed of (a) puck A and (b) puck B.
To solve this problem, we can use the conservation of momentum and the conservation of kinetic energy. Momentum is conserved in both the x and y directions, while kinetic energy is conserved only if the collision is elastic.
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It's saying that the answer I'm putting in is incorrect. I also tried the coordinate form but it says invalid.