| A | B |
|---|
| Motion | A change in the position of an object compared to another object |
| Force | An interaction between objects that causes a change to the objects' motion. |
| Action | Movement; something that happens. |
| Design Constraint | How much something costs to make, materials, and safety. |
| Friction | A force that opposes the motion of a body across a surface or through a gas or liquid. |
| Conservation of Energy | Energy can not be created out of nothing, nor can it be completely destroyed. |
| Net Force | The resulting force determined by combining all of the forces acting on an object. |
| Work | A force applied to an object over a distance. |
| Inertia | An object's resistance to a change in motion. |
| Acceleration | A change in the velocity (speed, direction, or both) of a body. |
| Mass | The amount of matter in an object. |
| Momentum | A quantity of how much inertia a dynamic object has. |
| Gravity | A force that exists between any two objects that have mass. |
| Balanced Force | When two equal forces are applied to an object in opposite directions, the object does not move. |
| Unbalanced Force | Forces that cause a change in the motion of an object. |
| Newtons | The SI unit used to measure force. |
| Conservation of Mass | A fundamental principle of science stating that matter cannot be created or destroyed in a closed system. |
| Reaction | A force that is acting in the opposite direction. |
