| A | B |
|---|
| Motion | when an object changes its position relative to a reference point. |
| Distance | how far an object has moved |
| Displacement | distance and direction of an object's change of position from a starting point. |
| Speed | distance an object travels per unit of time |
| inertia | the tendency of an object to resist change in motion |
| Distance equation | distance = time X speed |
| Constant speed | speed that doesn't change over time. |
| Average speed | speed of motion when speed is changing. |
| Average speed equation | average speed = total distance/total time |
| Instantaneous speed | speed at any given point in time. |
| Acceleration equation | acceleration = net force/ mass |
| friction | a force that resists motion between two surfaces that are in contact |
| Velocity | speed AND direction of an objects motion. |
| Force | a push or a pull |
| acceleration | change in velocity in a certain period of time |
| Newton's 1st Law of Motion | a moving object should never slow down or change direction until a force is exerted on it |
| Newton's 2nd Law of Motion | the change in velocity of an object will be in the direction of the net force |
| Newton's 3rd Law of Motion | action and reaction forces are equal and in opposite direction |
| gravity | the force that all objects exert on each other |
| net force | the combination of all forces acting on an object |
