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Motion and Forces
Unit 1
| Term | Definition |
|---|---|
| Position | describes the location of an object. |
| Reference Point | is a location to which you compare other locations. |
| Motion | is a change in position over time. |
| Speed | is a measure of how far something moves is a given amount of time. |
| Vector | is a quantity that has both size and direction. |
| Velocity | is a speed in a specific direction. |
| Acceleration | is the rate at which velocity changes. |
| Centripetal Accereration | Acceleration in a circular motion. |
| Force | is simply a push or pull. |
| Net Force | the combination of all the forces acting on an object. |
| Inertia | is the tendency of all objects to resist a change in motion. |
| Gravity | is a force off attraction between objects due to their mass. |
| Free Fall | is when gravity is pulling it down and no other forces are acting on it. |
| Orbit | when an object is traveling around another object in space. |
| Fluid | is any material that can flow and that takes the shape of its container. |
| Pressure | is the measure of how much force is acting on a given area. |
| Pascal | one pascal (1 Pa) is the force of one newton exerted over an area of one square meter (1 N/m2). |
| Atmospheric Pressure | the pressure caused by the weight of the atmosphere. |
| Buoyant Force | is an upward force that fluids exert on all matter. |
| Archimedes' Principle | states that the buoyant force acting on an object in a fluid is an upward force equal to the weight of fluid that the object displaces. |