| Term | Definition |
|---|
| Newton's first law of motion | An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line, unless acted on by an unbalanced force. |
| Inertia | The tendency of all objects to resist any change in motion. |
| Newton's second law of motion | The acceleration of an object depends on the mass of the object and the amount of force applied to the object. |
| The relationship between the force applied and the object's acceleration. | An objects acceleration increases as the force applied increases. (Vice versa.) |
| Newton's second law mathematically | a=F/m or F=m x a |
| Newton's third law of motion | Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. |
| How forces in each pair are related | When a force is exerted, another force occurs that's equal in size and opposite in direction. |
| What Newton explained with his 3 laws of motion | He explained the relationship between force and the motion of an object. |
| Newton's first law is sometimes called.. | The Law of Inertia |
| The direction in which objects accelerate | In the direction of the force applied. |
| terminal velocity | When an object is falling at a constant velocity. |
| Inertia | The tendency of an object to resist a change in motion. |
| Projectile motion | The path that a thrown object follows. |
| Free fall | When air resistance does not affect the motion of a falling object. |
| When a soccer ball is kicked why do the reaction and action forces NOT cancel eachother out? | Because the forces act on different objects. |
| An object is in projectile motion if it... | ...is thrown with a horizontal push, is accelerated downward by gravity, and does not accelerate horizontally. |
| The formula for momentum | p=m x v or momentum= mass x velocity |
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