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Instantaneous Velocity of a Ball In physics it is shown that the height s of a ball thrown straight down with an initial velocity of from a rooftop 160 feet high is
where is the elapsed time that the ball is in the air.
(a) When does the ball strike the ground? That is, how long is the ball in the air?
(b) What is the average velocity of the ball from to ?
(c) What is the instantaneous velocity of the ball at time ?
(d) What is the instantaneous velocity of the ball at ?
(e) What is the instantaneous velocity of the ball when it strikes the ground?
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Precalculus Enhanced with Graphing Utilities Plus MyLab Math with Pearson eText - Access Card Package (7th Edition) (Sullivan & Sullivan Precalculus Titles)
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