Conservation of Momentum S.M.H.S.
1. Two carts of masses 5.0 kg and 1.0 kg are start at rest and are pushed apart by a compressed spring. If the 5.0 kg cart moves westward at 2.0 m/s, the magnitude of the velocity of the 1.0 kg cart will be *
10 points
Two carts resting on a frictionless surface are forced apart by a spring. One cart has a mass of 2 kg and moves to the left at 3.0 m/s. If the second cart has a mass of 3 kg, it will move the right with a speed of
10 points
3. An 80. kg skater and a 60. kg skater stand at rest in the center of a skating rink. The two skaters push each other apart. The 60. kg skater moves east at 10 m/s. What is the velocity of the 80. kg skater ?(neglect frictional effects)
10 points
4. An 80. kg skater and a 60. kg skater stand at rest in the center of a skating rink. The two skaters push each other apart. The 60. kg skater moves east at 10 m/s. What is the total momentum of the 2 skaters after they interact?(neglect frictional effects)
10 points
5. A 4.0-kg cart moving to the right at 3 m/s collides with a 6.0-kg cart moving to the left at 2 m/s on a horizontal frictionless surface.When the carts collide they lock together. The magnitude of the total momentum of the two-cart system after the collision is
10 points
6. A 1.2-kg block and a 1.8-kg block are initially at rest on a frictionless, horizontal surface. When a compressed spring between the blocks is released, the 1.8-kg block moves to the right at 2.0 m/s. What is the speed of the 1.2-kg block after the spring is released?
10 points
7. A compressed spring is placed between two carts initially at rest on a horizontal frictionless surface. Cart A has a mass of 2 kg and cart B has a mass of 1 kg. A string holds the carts together. What occurs when the string is cut and the carts move apart?
10 points
8. In the question 7, after the string is cut and the two carts move apart, the magnitude of which quantity is the same for both carts?
10 points
9. A 5 kg cart moving very slowly, has a perfectly elastic collision with a 1 kg cart moving very quickly. Which of the following statement MUST be true?
10 points
10. A 1.2-kg block and a 1.8-kg block are initially at rest on a frictionless, horizontal surface. When a compressed spring between the blocks is released, the 1.8 kg block moves to the right with a momentum of 3.6 kgm/s. What is the momentum of the 1.2 kg cart?
10 points