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Science: Physics
| Question | Answer |
|---|---|
| frame of reference | a visible boundary in which motion occurs |
| reference point | a stationary object used to determine if another object is moving |
| point of origin | the place from which motion begins |
| distance | the space traveled between two points |
| displacement | the shortest distance between two points represented with a straight line (includes direction(vector)) |
| force | a push or pull |
| What unit is used to measure force? | Newtons (N) |
| What type of forces result in a change in the speed and/or direction of motion? | Unbalanced forces |
| What type of forces result in zero net force? | Balanced Forces |
| Is gravity a push or pull? | pull |
| What is the unbalanced force that brings nearly everything on Earth to a stop? | friction |
| Newton's 1st Law | An object in motion will stay in motion and an object at rest shall stay at rest, unless acted upon by an outside force. |
| Newton's 2nd Law | As force increases, acceleration increases. As mass increases, acceleration decreases. F=ma |
| Newton's 3rd Law | Every action has an equal and opposite reaction |
| inertia | the tendency of an object to remain unchanged (property of matter) |
| In Newton's 2nd law, mass and acceleration have a(n)________ relationship | indirect |
| In Newton's 2nd law, force and acceleration have a(n)________ relationship | direct |