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Physics Chapter 4.
Chapter 4 End Quarter Test Study Guide Grade 9.
| Question | Answer |
|---|---|
| Newton's 1st Law: | An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced, external force. |
| Newton's 2nd Law: | If a body is acted upon by an external force, it will accelerate in the direction of the unbalanced force with an accelerated proportional to the force. |
| Equilibrium: | When net force equals zero, an object remains in the same motion (no acceleration) |
| Net Force: | Sum of all the forces acting upon an object. |
| Apparent Weight: | How heavy an object feels, force pushing up on an object by the floor. |
| Centripetal Force: | A force directed towards the center that causes an object to follow a circular path. |
| Centripetal Acceleration: | Occurs due to velocity direction change. |
| Radius: | Distance from center of a circle to the outer edge. |
| Normal Force: | Force from the surface of an object; contact force that makes 90 degree angle with surface edge. |
| Work: | The product of the displacement and force in the direction of the displacement; scalar quantity. |
| Power: | The time rate at which work is done and energy is transformed. |
| Dot Product: | Can only multiply two vectors that are in the same direction. |
Created by:
Tierney
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