| A | B |
|---|
| Distance | Total length moved by an object |
| Speed | Average distance traveled by a moving object in a unit of time. |
| Acceleration | The rate of change in speed or motion of an object; the rate velocity changes. Refers to increasing speed, decreasing speed or changing direction. |
| Force | A push or pull exerted on an object causing the object to change its motion; measured in newtons. |
| Newtons | The unit of measurement force is measured in. |
| Unbalanced Force | A force or group of forces that push more on one side than the other and causes a change in movement. |
| Reference Point | a place or object used for comparison to determine if something is in motion. |
| Velocity | The speed and direction of an object's motion. |
| Balanced Forces | Equal forces acting on one object in opposite directions |
| Friction | A force that opposes motion . |
| Newton's 2nd Law of Motion | The acceleration of an object depends on the mass of it and the amount of force applied. Force=mass x acceleration. |
| Formula for Speed | Distance Divided by Time |
| Motion | a change of position relative to some reference object during some period of time. |
| Resistance force | a force that resists or opposes motion, like wind or friction. |
| Kinetic energy | energy of motion. |
| Air resistance | the frictional force from the air that resists forward motion. |
| Momentum | a property that a moving object has because of its mass and velocity. |
| Newton's 1st Law of Motion | The law of inertia which says objects at rest tend to stay and rest and objects in motion tend to stay in motion unless acted on by an unbalanced force. |
| Newton's 3rd Law of Motion | For every action, there is an equal and opposite reaction. |
| Sir Issac Newton | known for his discovery of gravity and his three laws of motion. |
