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Phy. Sci. Vocab. 5&6
The vocabulary in Chapter 5 and 6.
| Definition | Vocabulary |
|---|---|
| Motion | an object's change in position over time when compared with a reference point |
| Speed | the rate at which an object moves; depends on the distance traveled and the time taken to travel that distance |
| Velocity | the speed of an object in a particular direction |
| Acceleration | the rate at which velocity changes; an object does this if its speed changes, if its direction changes, or if both its speed and direction change |
| Force | a push or a pull; all have both size and direction |
| Newton | the SI unit of force |
| Net Force | the force that results from combining all the forces exerted on an object |
| Friction | a force that opposes motion between two surfaces that are touching |
| Gravity | a force of attraction between objects that is due to their masses |
| Weight | a measure of the gravitational force exerted on an object, usually by the Earth |
| Mass | the amount of matter that something is made of; its value does not change with the object's location |
| Terminal Velocity | the constant velocity of a falling object when the size of the upward force of air resistance matches the size of the downward force of gravity |
| Free Fall | the condition an object is in when gravity is the only force acting on it (think about the ride, Free Fall, at Six Flags) |
| Projectile Motion | the curved path an object follows when thrown or propelled nar the surface of Earth |
| Inertia | the tendency of all objects to resist any change in motion |
| Momentum | a property of a moving object that depends on the object's mass and velocity |
Created by:
JDay
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