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motion and force
for test
| Term | Definition |
|---|---|
| Reference Point | the starting point you choose to describe the location, position, of an object |
| Position | an object's distance and direction from a reference point |
| Motion | the process of changing position |
| Displacement | difference between the initial, or starting, position and the final position |
| Speed | a measure of the distance an object travels in a given amount of time |
| Velocity | the speed and direction of a moving object |
| Vector | a quantity that has both magnitude and direction |
| Acceleration | a measure of the change in velocity during a period of time |
| Force | a push or a pull on an object |
| Contact Force | a push or pull on one object by another object that is touching it |
| Newton's 2nd law of motion | law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object's mass |
| Friction | a contact Force that resists the sliding motion of two surfaces that are touching |
| Free-body diagram | a simple model to understand what will happen to an object due to a force |
| Net force | the combination of all the forces acting on an object |
| Newton's first law of motion | an object at rest will stay rest will stay at rest, and an object in motion will stay in motion unless a force acts on the object |
Created by:
user-2021019