| Term | Definition |
|---|
| Motion | change in position relative to a reference point |
| Reference Point | point used to see motion |
| Speed | how fast something is going |
| Velocity | speed of an object in a particular direction |
| Acceleration | rate at which velocity changes over time |
| Force | a push or pull exerted on an object in order to change the motion of the object; has size and direction |
| Resultant (Net) Force | the combination of all forces acting on an object |
| Balanced Forces | two forces with the same number of newtons |
| Unbalanced Forces | two forces with a different number of newtons |
| Contact Forces | forces that touch the object they affect |
| Non-Contact Forces | forces that do not touch the object that they affect |
| Kinetic Friction | friction between moving surfaces |
| Static Friction | friction between non-moving surfaces |
| Weight | a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe |
| Mass | a measure of the amount of matter in an object |
| Inertia | the tendency of an object that is in motion to stay in motion and an object at rest to stay at rest unless acted on by an outside force |
| Momentum | a quality defined as the product of the mass and velocity of an object, also known as "moving inertia" |
| Work | the transfer of energy to an object using a force that causes the object to move in the direction of the force |
| Work Input | the work done on a machine; the product of the input force and the distance through which the force is exerted |
| Work Output | the work done by a machine; the product of the output force and the distance through which the force is being exerted |
| Power | the rate at which work is done or energy is transformed |
| Simple Machine | a device that helps do work by either overcoming a force or changing the direction of the applied force |
| Energy | the capacity to do work |
| Potential Energy | stored energy |
| Kinetic Energy | energy possessed by an object in motion |
| Energy Conversion | energy transformation - when energy is changed from one form to another |
| Efficiency | a comparison of a machine's work output and work input |
Combine with other sets
Share on Facebook
Share on MySpace