1.A 10 kg mass traveling 2 m/s to the right meets and collides elastically with a 2 kg mass traveling 4 m/s in the opposite direction. After the collision, the 10 kg mass has a velocity of 3 m/s to the right. Find the final velocity of the 2 kg mass 2.A 5 kg bowling ball moving to the left at 7 m/s hits a stationary 6 kg ball. After the 6kg ball moves to the left at 2m/s. What is the final velocity of the 5 kg ball?

3.Two sumo wrestlers run towards each other, the first has a mass of 150 kg and is running at 14m/s to the right. The second wrestler has a mass of 200kg and is running with a speed of 18m/s. They collide in a perfectly elastic collision. If the second wrestler bounces to the right at 4 m/s. Find the final velocity of the first wrestler. (Answer to two decimal places)

4.A 0.015 kg bullet is fired at a 1.5 kg block initially at rest. The bullet, moving with an initial speed of 500 m/s to the right, emerges from the block with a speed of 400 m/s to the right. What is the speed of the block after the collision?