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13 Cards in this Set
- Front
- Back
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What is net force? |
Changes momentum (usually acceleration) |
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What is angular momentum? |
The rotational momentum of a spinning or orbiting object |
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What is mass? |
A measure of the amount of matter in an object |
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What is weight? |
The force that a scale exerts upon an object |
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On the moon, your weight and mass: |
Weight is less, mass is the same |
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What are you weightless in space? |
There’s gravity, but you’re in a constant free-fall |
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What is needed to change an objects angular momentum? |
A torque |
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How does earths force compare with your force? |
Earth and you exert equal and opposite forces on each other |
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Newtons 3 laws of motion |
1. Objects move at a constant velocity if no net force is acting 2. Force = mass x acceleration 3. For every force there is an equal and opposite reaction force |
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Why do objects continue at a constant velocity? |
Conservation of momentum |
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When the distance is ___, the velocity is ___ |
Greater/smaller |
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What are the 3 basic types of energy? |
Kinetic (motion) Radiative (light) Potential (stored) |
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What is thermal energy? |
The collective kinetic energy of many particles |
