Conservation of Momentum and Collisions

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Across
  1. 1. The ___ of the momentum vectors is the same before and after each elastic collision.
  2. 2. Momentum is a ___ quantity.
  3. 6. At this level, perfectly elastic collisions are common.
  4. 7. A collision in which the colliding objects become distorted or generate heat.
  5. 11. In a collision, momentum is ____.
  6. 13. The Law of Conservation of Momentum states that, in the absence of an external force, the momentum of a system remains ___.
  7. 15. These type of collisions are not common in the real world.
  8. 17. the momentum of a system cannot be changed unless it is acted upon by ___ forces.
Down
  1. 1. Newton's ___ law states that if no net force is exerted on a system, no acceleration occurs.
  2. 3. Colliding objects bounce perfectly in this type of collision.
  3. 4. If you want to change the momentum of an object, you must exert an ___ on it.
  4. 5. External forces are usually ___ in collisions.
  5. 8. Newton's ___ law describes the equal and opposite motion that results from collisions.
  6. 9. The plural form of momentum.
  7. 10. Momentum can be calculated by multiplying ___ with velocity.
  8. 12. Molecular forces are ___ forces. They can't change an object's momentum.
  9. 14. To accelerate an object, a ___ force must be applied to it.
  10. 16. Most collisions involve some external ___.