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Book M: Ch 2 Science
Study for Chapter 2 test on Wednesday
| Term | Definition |
|---|---|
| orbiting | an object traveling around another object in space |
| free fall | the motion of a body when only the force of gravity is acting on the body |
| centripetal force | the unbalanced force that causes objects to move in a circular path |
| gravity | a force of attraction between objects that is due to their masses |
| inertia | the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object |
| friction | the force that opposes motion between two surfaces in contact |
| air resistance | the force that opposes motion of objects through air |
| projectile motion | the curved path that an object follows when thrown, launched, or otherwise projected near the surface of the Earth |
| The Law of Conservation of Momentum | any time objects collide, the total amount of momentum stays the same |
| Newtons 1 Law | an object at rest stays at rest and an object in motion stays in motion at constant speed and in a straight line, unless acted on by an unbalanced force |
| Newtons 2 Law | the acceleration of an object depends on the amount of mass and force applied |
| Newtons 3 Law | whenever one objects exerts a force on a second object, the second objects creates an equal and opposite reaction force on the first (action - reaction) |
| what motion does a snowball exhibit in the air | projectile motion |
| what forces cause projectile motion | horizontal and vertical motion |
| hand force on snowball = ??? | horizontal motion |
| gravity pulling snowball down = ??? | vertical motion |
| velocity (units) | m/s + direction |
| gravity (units) | m/s2 + direction |
| time (units) | s |
| force (units) | N or kg x m/s2 |
| mass (units) | kg |
| acceleration (units) | m/s2 + direction |
| momentum (units) | kg x m/s + direction |
Created by:
graceernst
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