What is a Force?
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Force: A force is a push or a pull. Forces are
measured in |
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A force gives energy to an object. Whenever two objects touch, forces are involved. In fact according to Newton’s Third Law, the bat and the ball will push against each other with equal forces. |
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A force can cause acceleration, a change in direction or deceleration. A force is NOT required to keep an object in motion. |
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Examples of Some Forces |
The Following
Are NOT FORCES
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Some Contact Forces |
Some Forces that act at a distance |
Mass |
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Friction opposes motion. |
Magnetism |
Inertia |
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Drag (air resistance) |
Gravity |
Speed |
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Weight (weight = mass x gravity) |
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Acceleration |
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Centripetal Force |
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Thrust (A spinning propeller moves a plane) |
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What is a Force?