Momentum

1. ________ is measured in newton-seconds.
3. if impact time is longer, then a _________ impact force results.
7. what's missing in the equation "momentum = mass x _________?
9. collisions when objects collide without being permanently deformed and without generating heat, the collision is said to be _______ __________?
10. how much force does a golf ball have before it is hit by a golf club?
11. perfect elastic collisions usually only happen on the ________ level.
13. _________ is when you bring an object to a stop and throw it again.
15. does it take more or less impulse to throw the object again rather than just stopping it?
16. if impact time is shorter, then a _________ impact force results.

2. most collisions involve (internal or external) force?
4. _______ refers to a force and is measure in newtons.
5. what type of force results in no change in momentum (internal or external)?\
6. quantities are used also in momentum by using the direction and the magnitude.
8. collisions when colliding objects become tangled or coupled together is called _______ _______?
11. conservation of ___________ states that "in the absence of an external force, the momentum of a system remains unchanged."
12. a _______ impact time reduces force of impact and decreases resulting deceleration.
14. what causes a change in the acceleration or momentum?