Matter in Motion
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Created by:
twihardgleek on May 21, 2012
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20 terms
Terms | Definitions |
|---|---|
 Force | A push or pull extorted on an object in order to change the motion of the object; force has size and direction |
| Net Force | Combination of all the forces acting on an object |
| Inertia | Tendency of an object to resist any change in motion or a moving object resisting motion until another force acts on it |
| Friction | A force that opposes motion between two surfaces that are in contact |
| Mass | A measure of the amount of matter in an object |
| Weight | A measure of the gravitational force exerted in an object; can change |
| Terminal Velocity | Constant velocity of a falling object when the force of air resistance is equal to the magnitude and direction of gravity |
| Gravity | Force of attraction between two objects due to their masses |
| Air Resistance | Force that opposes motion of objects through air |
| Newton | SI unit for force |
| Free Fall | The motion of a body when only the force go gravity is acting on the body |
| Projectile Motion | the curved path that an object follows when thrown, launched, or otherwise projected near the Earth's surface |
| Newton's 1st Law | An object at rest remains at rest and an object in motion remains in motion at a constant speed in a straight line unless disturbed by an unbalanced force |
| Newtons 2nd Law | The acceleration of an object depends on the mass and force applied |
| Newton's 3rd Law | Whenever one object exerts a force on the second, the second object exerts an equal and opposite force on the first |
| Balanced | When the net forces produce 0 N; do not cause a change in the motion of a moving object and don't cause nonmoving to move |
| Unbalanced | When the net force is not 0 N; produce a change in motion such as speed or direction, necessary to cause a nonmoving to move |
| Motion | An objects change in position relative to a reference point |
| Momentum | a quantity defined as the product of the mass and velocity of an object |
| Law of conservation of Momentum | Any time objects collide the total amount of momentum stays the same |
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