Unit 4: Linear Momentum

2. Regardless of the type of collision, momentum is always _________.
4. Car frames are designed to reduce impulse by using built in ______ zones.
9. All objects with mass have _________, regardless of their motion.
15. A collision in which both momentum AND kinetic energy is conserved is called an _________ collision.
16. When two objects collide inelastically, their ________ are combined into one moving body.
17. When objects collide inelasically, some of their kinetic energy is turned into sound and _______ energy that goes on to deform the object.
18. Although total energy is always conserved, _______ energy may not be during certain collisions.
19. A change in momentum is caused by an ________.

1. A common example of an elastic collision is a child jumping in a _________ house.
3. The _______ exerted on an object during a change in momentum is dependent on the time it takes to change the momentum.
5. Only moving masses have __________.
6. A collision in which ONLY momentum is conserved and objects combine is called an ________ collision.
7. The best way to increase safety during a collision is to increase the ______ it takes to stop.
8. A car _______ is a good example of many concepts from this unit.
9. Safety features like airbags and seatbelts are designed to ______ the time of deceleration, thereby reducing the impact force.
10. The equation for momentum is ___________.
11. The equation Ft=mv is also known as the impulse-momentum _________.
12. The equation for impulse is _____________.
13. In this unit, we talked about _______ momentum, which uses different variables than rotational motion.
14. When two objects ________ together, we call it an inelastic collision.