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Newton's 1st law
| Term | Definition |
|---|---|
| Distance | how far you have traveled between two positions; always positive |
| Displacement | change in position; straight line distance between starting and ending position; can be positive or negative |
| Sailor | quantities that only require magnitude |
| Vector | quantities that require both magnitude and direction |
| Speed | how fast something is going |
| Velocity | rate at which your position changes |
| mass | a body of matter ; usually of indefinite shape & often considerable size |
| inertia | a property of matter by which is retains its state or its velocity along a straight line so long as it is not acted upon by a external force |
| force | strength or power exerted upon an object |