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Displacement- vector extending from object's initial position to its final position
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Distance- scalar quantity representing the actual path followed by an object
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Distance equals displacement when the object travels in a straight line and does not reverse its direction
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Velocity- vector describing the rate of displacement
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average velocity = displacement/time
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Instantaneous velocity- velocity at a specific time
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Speed- scalar calculating the rate of distance
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average speed = distance/time
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If an object travels in a straight line, then speed and velocity are interchangeable
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Acceleration- rate of change of velocity
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acceleration = change in velocity/time
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Uniform acceleration- magnitude remains constant; constant acceleration- magnitude and direction are constant
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If acceleration acts in the same direction as velocity: speed increases
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If acceleration acts in the opposite direction as velocity: speed decreases
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If acceleration acts perpendicularly to velocity: direction changes
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The acceleration of gravity is 10 m/s2
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vf2 = vi2 + 2ax
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vf = vi + at
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x = vi*t + 0.5at2
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v=x/t or x=vt
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GRAPH
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SLOPE
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AREA
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Position (or distance) v. time
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Velocity
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N/A
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Velocity v. time
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Acceleration
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Displacement (change in position)
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Acceleration v. time
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N/A
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Change in velocity
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Cheatography n. The art of mapping complex subjects into clear, instantly navigable reference guides.
