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| Question | Answer |
|---|---|
| Force | A push or a pull that can cause the motion of an object to change. It has two important properties: strength and direction. |
| Balanced Force | When two equal forces act in opposite directions the result is that the forces are balanced and there is no motion. |
| Motion | The process of moving or changing position. |
| Unbalanced Force | When one force is stronger than the other the result is motion. |
| Strength | The amount of force that is applied to an object. |
| Gravity | A force that attracts objects toward the earth. "What goes up, must come down!" |