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Message: <blockquote data-quote="bose301s" data-source="post: 3380127" data-attributes="member: 575773">Vi is 80mph, acceleration is gravity in the downward direction. From there its easy. Use this eqn. vf^2 = vo^2 + 2ad, vf=0, vo=80mph, a is the acceleration due to gravity and d is what you are solving for, the same equation can ve used for part b.As for the problem, it's BS as a ball off the bat has been know to be upwards of 125mph, your teacher is a moron.</blockquote>

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