1. A golf ball of mass 0.050 kg acquires a speed of 80.0 m/s when hit with a force of 3.0 x 103 N.
How long was the club in contact with the ball?
2. A 65 kg ice skater traveling at 6.0 m/s runs head on into an 85 kg skater traveling straight forward at 4.5 m/s.
At what speed and in what direction do the skaters travel if they move together after the collision?
3. A 4.0 kg object traveling westward at 25 m/s hits a 15 kg object at rest. The 4.0 kg object bounces eastward at 8.0 m/s.
What is the speed and direction of the 15 kg mass?
4. A bullet of mass 0.65 kg is fired from a 40 kg gun with a speed of 5.0 x 102 m/s. What is the recoil velocity of the gun?