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Laws of Motion
Term | Definition |
---|---|
Simple machines | make work easier for us by allowing us to push or pull over increased distances. |
Gravity | is a force that causes objects to pull towards Earth. |
Weight | is a pull of gravity on an object. |
Mass | is the amount of matter in an object. |
Force | A push or pull. |
Friction | the force between two objects when they rub together. |
Energy | The ability to do work |
Kinetic Energy | The energy of MOTION |
Potential Energy | Energy due to position or stored energy |
Inertia | the tendency of objects to resist change in motion |
Newton's 1st Law or The Law of Inertia | An object at rest will stay at rest and an object in motion will stay in motion unless acted on by an outside force. (Or...Things want to keep on doing what they are doing!) |
Acceleration | Any change in the movement of an object. (A change in speed and/or direction). |
Newton's 2nd Law | The amount of force needed to move an object depends on its mass and acceleration. (Or...F = MA) |
Newton's 3rd Law | Every action has an equal and opposite reaction. |