| Front | When work is being done pushing or pulling something it is often being done against what force? |
| Back | Friction or gravity |
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| Front | What is momentum? |
| Back | It is a property of every moving object and has both magnitude and direction. Momentum = m x v |
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| Front | What is a force on an object? |
| Back | A push or pull acting on an object with direction and magnitude. |
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