# Momentum

1. Momentum is a characteristic of a moving object that is related to the mass and the velocity of the object.

2. A conservation law stating that the total linear momentum of a closed system remains constant through time, regardless of the possible changes within the system.

3. The formula for momentum is p=mv, where p is momentum, m is mass in kg and v is velocity in m/s.

4. The letter p stands for momentum because they used the word "impetus" instead of momentum and it came from that Latin word "petere" which means to go towards or rushed upon.

5. The heavy moving van and the small motorcycle could have the same momentum because the van has a lot of mass which makes it harder to stop and the small motorcycle would be going  very fast making it harder to stop.

6. A sticky collision is when objects with the same mass stick together during a collision a non-sticky collision is when two objects with the same mass don't stick together, instead the faster object slows down and the slower object would eventually speed up.

7. Elastic collision-

- When two bodies in which the kinetic energy is the same before and after they collide.

8. Inelastic collision-

- When two objects collide, the kinetic energy could turn into vibration energy causing a heating affect, deforming the body.

9. I think that throwing a piece of clay on the ground would be an inelastic collision because it wouldn't bounce back because the kinetic energy would not be conserved.

10. Angular momentum is when an object spins around instead of going straight. Stars, planets and the moon are a good example of this because they all orbit.