Velocity of a Falling Object
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The graph of height as a function of time for an object falling straight down is a parabola. The average velocity of this falling object approaches its instantaneous velocity as the time interval tends to zero. Interpreting this geometrically on the parabola, the slope of a secant line approaches the slope of the tangent to the curve.
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Contributed by: Jim Brandt (March 2011)
Open content licensed under CC BY-NC-SA
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"Velocity of a Falling Object"
http://demonstrations.wolfram.com/VelocityOfAFallingObject/
Wolfram Demonstrations Project
Published: March 7 2011
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