Conservation of Momentum pg. 185

A 0.50 kg ball traveling at 6.0 m/s collided head-on with a 1.00 kg ball moving in the opposite direction at a velocity of -12.0 m/s. The 0.50 kg ball moves away at -14 m/s after the collision. Find the velocity of the second ball

A 35.0 g bullet strikes a 5.0 kg stationary wooden block and embeds itself in the block. The black and the bullet fly off together at 8.6 m/s. What was the original velocity of the bullet?

A 35.0 g bullet moving at 475 m/s strikes a 2.5 kg wooden block. The bullet passes through the block, leaving at 275 m/s. The black was at rest whet it was hit. How fast is it moving when the bullet leaves?

A 0.105 kg hockey puck moving at 48 m/s is caught by a 75 kg goalie at rest. With what speed does the goalie slide on the ice?