Force and Motion Vocab

3. - A force that slows or stops motion when objects rub together
5. - A plane used to push objects apart
10. - The amount of matter in an object
11. forces - Unequal forces in opposite directions that do affect motion
13. - A change in position or location
14. - A force that pulls objects towards the center of the Earth
16. - When speed increases or decreases over time
17. and axle - A tool used to carry loads easily for long distances with less effort

1. - The standard international unit of force
2. - A push, pull, twist, or turn on an object that causes it to move, stop, or change direction
4. - A pulling force that acts along a flexible connector—such as a rope or chain—when stretched taut from opposite ends
6. - A tool that uses wheels and rope to raise, lower, or move a load
7. - The property of an object that resists movement by a force; objects at rest stay at rest and objects in motion stay in motion unless acted upon
8. forces - Two forces in opposite directions that do not affect motion
9. plane - Any slope or ramp
12. - An inclined plane wrapped in a spiral
15. - A rod balanced on a fixed point that can help lift a heavy weight with less effort