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18 Cards in this Set
- Front
- Back
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speed
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s=distance/time
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velocity
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speed with direction
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acceleration
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a=change of velocity/time elapsed
change of velocity per time unit |
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force
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push or pull on object
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net force
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sum of all forces on object
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fundamental force
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gravity, electromagnetic, weak and strong nuclear
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inertia
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tendency to remain in motion whether at rest or moved by unbalanced force
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free fall
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considers gravity and not air resistnce
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1 law of motion
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rest or motion is retained until acted upon b unbalanced force
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2 law of motion
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acceleratoin is directly proportional to force acted on it and inversely to mass of object
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3 law of motion
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for each action there is an equal and oppoiste reaction
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momentum
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mass x velocity
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law of conservation of momentum
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the momentum of a group of objects is uneffected by external force
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impulse
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product of force and time its applied
i= force x time |
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centripetal force
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force that pulls object from straight to circular path
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centrifugal force
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outward tug
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universal law of gravitation
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all objects are attracted to each other wit h a force proportinal to their mass and distance
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geosynchronous satellite
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stays in fixed spot over the earth
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