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force and motion
| Term | Definition |
|---|---|
| newtons first law of motion | An object at rest stays at rest or an object in motion stays in motion until unbalanced forces act upon it. This is often referred to as Newton's law of inertia. |
| newtons first law of motion | a car that is driving and a car that is parked |
| inertia | The tendency of a physical object to remain still or continue moving unless force is applied |
| inertia | a rock just sitting on a table |
| at rest | The state of an object when it is not in motion |
| at rest | a basketball sitting on the floor |
| unbalanced force | Forces on an object that cause change in the motion of the object |
| unbalanced force | a ball falling on the ground and bouncing in the air |
| Newton’s Second Law of Motion | Acceleration of an object depends on the object's mass and the magnitude of the force acting upon it (F = ma). This is often referred to as Newton's law of force and acceleration. |
| Newton’s Second Law of Motion | a roller coaster |
| force | A push or pull that can change the motion of an object |
| force | pushing on a door |
| magnitude | The size or quantity of something |
| magnitude | a airplane in the air |
| acceleration | The rate of change in an object's speed |
| acceleration | an airplane taking off |
| Newton’s Third Law of Motion | For every action there is an equal and opposite reaction. This is often referred to as Newton's law of action-reaction. |
| Newton’s Third Law of Motion | a spaceship taking off to space |
| action | The way that something causes a change |
| action | catching a baseball |
| reaction | Resistance or force of equal magnitude acting in the opposite direction of an action force |
| reaction | domino's hitting each other |