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| Question | Answer |
| Force | Interaction of two objects, changing motion |
| Attractive Force | Gravity- 2 masses |
| Contact Force | 2 Forces interacting (ie friction) |
| Gravitational force | Weight |
| Weight | =Matter (massxgravity) |
| Mass | Amount of Matter making up object |
| All objects have same acceleration due to gravity= 9.81 | Except when cancelled out by air resistance |
| Terminal Velocity | Objects reach velocity where no further acceleration occurs |
| Newton's Law of Inertia (Law 1) | Velocity does not change unless a resultant external force is placed upon it |
| Newton's Law of Acceleration | Resultant force and rate of change is proportionate to direct force |
| Newton's Law of Reaction | For every force there is an equal and opposite force |
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