Extra Credit

1. a quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.
5. a particular kind of matter with uniform properties.
8. the action or process of moving or being moved.
9. a property of matter by which it remains at rest or in unchanging motion unless acted on by some external force
11. a substance made by mixing other substances together.
13. the resistance created by any two objects when sliding against each other.
16. is a force that acts at all times on all objects near Earth.
17. increase in the rate or speed of something.
19. strength or energy as an attribute of physical action or movement.
20. physical substance in genera
21. mass in motion

2. a thing that is composed of two or more separate elements; a mixture.
3. the rate at which someone or something is able to move or operate.
4. the speed of something in a given direction.
6. having only magnitude, not direction.
7. an amount of space between two things or people.
10. the moving of something from its place or position.
12. type of friction that occurs when a wheel, ball, or cylinder rolls freely over a surface
14. force necessary to provide a mass of one kilogram with an acceleration of one metre per second per second.
15. The friction experienced when individuals try to move a stationary object on a surface, without actually triggering any relative motion between the body and the surface on which it is on.
18. a part or aspect of something abstract, especially one that is essential or characteristic.
19. friction is the force that opposes a motion that takes place within fluids or in between fluids.