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30 Cards in this Set
- Front
- Back
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Mass
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Amount of matter present in any object
grams or slugs |
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Weight
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amount of force earth is apply on you. (lbs.)
Mass x Gravity |
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Length
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distance from point a to point b
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Time
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seconds, minutes, hours, days, weeks, months, years
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One year
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time it takes for earth to travel around sun once
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One month
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time it takes for moon to travel around earth.
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One day
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time it takes for the earth to spin on its axis once
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Speed of Light
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186,000 miles/second = 3x10^8 mi/s
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seconds
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time it takes for light to travel 186,000 miles
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Area
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square feet. L x W
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Volume
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L x W x H
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Density
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Mass/Volume
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Newtons 1st Law
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if anything is in motion or at rest it will stay in motion or at rest until something stops/moves it. (Law of Inertia) motion or rest
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Newtons 2nd Law
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Acceleration is directly proportional to force and inversely proportional to mass. (big force, big acceleration) more mass; less acceleration. less mass; more acceleration
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Newtons 3rd Law
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Every axom has an equal and opposite force (Action and Reaction)
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Force
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mass x acceleration or gravity
g= 9.8 m/s^2 |
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Acceleration
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Change of Speed/time
Rate of change in velocity if direction is given its a vector. speed does not need direction |
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Rate
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distance/time
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Distance
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average speed x time
Length from point a to point b |
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Work
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force x distance
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Momentum
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defined as mass x velocity
(vector quantity) kg x m/sec |
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Law of Conservation of Momentum
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momentum before collision is always equal to momentum after impact
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inelastic
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collision where joined together. lost energy
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elastic
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collision where no energy lost
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Force
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rate of change of momentum
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Energy
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neither can be created nor destroyed
ability to do work (J) |
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Power
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work done/ time interval
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Potential Energy
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energy that arises b/c of an objects position, location. (conserves energy)
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Kinetic Energy
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energy possessed by moving objects; energy of motion
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1 hp
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746 watts
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