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10 September, 09:22

An object is projected upward with initial velocity of 124 ft per sec, its height h after t seconds is h=-16^2+124t. find the height of the object after 4 seconds.

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  1. 10 September, 11:49
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    I would think it is

    h=-16t^2+124t

    after 4 seconds or when t=4 find h

    h=-16 (4^2) + 124 (4)

    h=-16 (16) + 496

    h=-256+496

    h=240

    height is 240 feet
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