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17 Cards in this Set
- Front
- Back
Equations for uniformly accelerated linear motion
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x = xo + vot + (1/2)at^2
v = vo + at v^2 = vo^2 + 2ax v(avg) = (1/2)(v + vo) |
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Distance vs Time graph (d/t)
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-Slope is velocity
-Area under the curve is meaningless |
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Velocity vs Time graph (v/t)
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-Slope is acceleration
-Area under curve is displacement |
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Displacement
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x = v(avg) * t
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Acceleration
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a = (v - vo)/t
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Peak height of a projectile
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vo*sin(theta) = sqrt(2gh)
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Factors that change air resistance
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Speed, surface area, shape
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Mass and Air Resistance
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-Air resistance has less effect on a more massive object
-However, it does not CHANGE air resistance |
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Inertia
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The tendency of an object to remain in its present state of motion (EX: massive object will accelerate more slowly)
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Newton's Third Law forces NEVER act on the ______ _______.
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same system
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The normal force on an inclined plane is:
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mgcos(theta)
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The net force due to gravity and the normal force on an inclined plane is:
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mgsin(theta)
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Centripetal Force
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(m*v^2)/(r)
always caused by another force (either gravity, electromagnetic, or contact forces) |
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T or F: Friction always opposes motion
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F: Friction always opposes relative motion. The vector points in the direction that would prevent surfaces from sliding past each other
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Force of Static Friction
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fs <= us*Fn
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Force of Kinetic Friction
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fk = uk*Fn
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Hooke's Law
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F = -k*dx
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