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Science
Term | definition |
---|---|
Net Force | the combining of forces when two or more forces act on an object. |
Instantaneous speed | the speed at any given point - what shows up on your speedometer |
Velocity | the speed of an object and the direction of its motion. |
Acceleration | rate of change of velocity over time |
Work | the transfer of energy that occurs when a force makes an object move |
Power | the amount of work done in a certain time; the rate at which work is done |
Gravity | the attraction two objects have on one another |
Weight | The pull of gravity on an object, changes with the location of the object. Measured in Newtons |
Newton's 2nd Law | A net force acting on an object causes the object to accelerate in the direction of the net force. |
Newton's 3rd Law | every action has an equal and opposite reaction |
Distance | how far an object has moved. |
Speed | the distance an object travels per unit of time |
Average speed | total distance traveled divided by total time traveled |
Positive acceleration | when an object speeds up |
Negative acceleration | when an object slows down |
Force | A push or pull on an object |
Balanced Forces | forces that are equal in size and opposite in direction |
Unbalanced Forces | forces that are not equal in size and opposite in direction. |
Newton's 1st Law | an object will move at a constant velocity until a net force acts on it. |
Friction | resistance to motion when two objects are in contact with one another |
Air resistance | resistance an object feels when travelling through the air |
Mass | The amount of matter in an object, stays constant no matter where the object is. Measured in g, Kg, etc |