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Motion Review Guide
Physical Science
Term | Definition |
---|---|
Acceleration | Change in velocity per unit of time |
Air resistance | The force that opposes the motion of objects in the atmosphere |
Dependent variable | Controlled by the scientist x-axis |
Distance | Length between any two points in the path of an object |
Distance-time graph | Shows relationship between distance and time |
Force | A push or a pull (any cause of change in motion) |
Friction | A force that opposes the motion of one surface past another |
Gravity | A force of attraction between two objects |
Independent variable | Stand alone y-axis |
Inertia | A tendency of any object to opposes a change in position |
Mass | The quantity of matter that a body contains as measure by the force of gravity on it |
Momentum | The mass times of velocity of an object |
Motion | A change in position relative to fix it |
Newton | Amount of force need to give a 1 kg mass an acceleration 1 m/s/s |
Slope | The steepness of the line |
Speed | Distance traveled per unit of time |
Terminal Velocity | Constant speed a falling object reaches when air resistance balances gravity |
Velocity | Speed in a particular direction |
Weight | A measurement of gravity's pull on an object |
Newton's 1st Law of Motion | If an object at rest, it stays at rest. If an object is in motion, it stays in motion. |
Newton's 2nd Law of Motion | a=f/m |
Newton's 3rd Law of Motion | For every action, there is an equal and opposite re-action |
What causes a change in acceleration? | If it has been stopped. |
How does increasing the mass of an object affect Newton's 1st law of motion? | It would be harder to move. |
What happens to the acceleration of an object if you increase the force? | It will be easy to move. |
What happens to the acceleration of an object if you increase the mass? | It will be more difficult to move. |