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CA1 Review SP1 & 2
Practice Kinematics and Dynamics vocab for the first common assessment
| Term | Definition |
|---|---|
| magnitude | the size of a measurement, a number with a unit |
| scalar | a measurement that only has a magnitude, does not have direction |
| vector | a measurement that has a magnitude and a direction |
| component | a horizontal or vertical part of a resultant vector |
| resultant | the combination of 2 or more vectors into one |
| displacement | vector measurment of how far an object moved from start to finish in a straight line |
| acceleration | speed up, slow down, or change direction |
| acceleration | the rate of change of velocity |
| velocity | the rate of change of position |
| acceleration due to gravity | the rate at which all things fall on the earth |
| range | horizontal displacement of a projectile |
| projectile | object moving only due to gravity |
| speed | scalar, how fast |
| distance | scalar, how far |
| west, south, down, left | negative directions |
| north, east, up, right | positive directions |
| pythagorean and tan-1 | used to find the magnitude and direction of a resultant vector |
| SOH CAH TOA | used to find the components of an angled vector (hypoteneuse) |
| trajectory | the path that a projectile follows, shaped like a parabola |
| velocity | slope on a position time graph |
| acceleration | a curved line on a position time graph |
| m/s² | acceleration unit |
| m/s | velocity unit |
| m | displacement unit |
| s | time unit |
| a and g | acceleration variables |
| x and y | displacement variables |
| Vx, Vy, Vi, and Vf | velocity variables |
| horizontal | component of a projectile that has a constant velocity |
| vertical | component of a projectile that is accelerated due to gravity |
| net force | total of all forces acting on one object; causes acceleration |
| balanced forces; equilibrium | all forces on an FBD have an equal and opposite force |
| unbalanced force; nonequilibrium | at least one force on an FBD does not have an equal and opposite force present |
| inertia | an object's resistance to changes in motion; mass |
| N | force unit |
| kg | mass unit |
| 1st law | An object at rest will stay at rest, unless acted on by a net external force. |
| Net force and acceleration are ___ related | directly |
| Net force and mass are ___ related | inversely |
| 3rd law | All forces between two objects exist with equal magnitudes and opposite directions. |
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enewmanator
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