(II) Students shoot a plastic ball horizontally from

Chapter , Problem 99

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(II) Students shoot a plastic ball horizontally from aprojectile launcher. They measure the distance x the balltravels horizontally, the distance y the ball falls vertically,and the total time t the ball is in the air for six differentheights of the projectile launcher. Here is their data. (a) Determine the best-fit straight line that represents x asa function of t. What is the initial speed of the ballobtained from the best-fit straight line? (b) Determine thebest-fit quadratic equation that represents y as a functionof t. What is the acceleration of the ball in the verticaldirection?

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