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Cards In This Set
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How is a vector represented
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An arrow with magnitude AND direction(Length represents magnitude)
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How are vectors added
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 Place Tail of the second vector at the head of the first.Create a new vector from the tail of the first to the head of the second.New vector represents the sum of the vectors |
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Define mass (m)
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The quantity of molecular material that comprises an object
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Define volume (V)
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The amount of space occupied by an object
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Define density (p)
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Mass per unit volume.p = (m/V)
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Define work (W)
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Force applied to an object over a distanceW=F x s
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Define power (P)
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Work done per unit of timeP = W/t or P = F x V
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How do you convert to horsepower
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Divide power by 550(1 Hp = 550 lbs ft/sec)
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Define weight
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The force at which a mass is attracted toward the EarthWeight = mass x gravity
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Define force (F)
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F = mass x acceleration
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Define moment (M)
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Created when a force is applied at some distance from an axis or fulcrum producing rotation around that pointMoment = Force x Moment Arm
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Define moment arm
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The distance between an axis or fulcrum and a point force
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Define potential energy (PE)
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The ability of a body to do work because of its position or state of beingPE = Weight x Height (PE=mgh)
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Define kinetic energy (KE)
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The ability of a body to do work becayse of its motionKE = 1/2 X mass * Velocity2 (KE=1/2mV2)
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What is the principle behind conservation of energy
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Energy can not be created or destroyed only transfered from one form to anotherTotal Energy (TE) = PE + KEThere for if PE of an object goes up KE must go down
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