Quadratic Equations

The height of an object dropped from a 100-ft-tall building is given by h=-16t squared + 100. When will the object hit the ground? (Please provide steps/explanation to solve this problem.)

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  1. when it hits the ground is when h=0, so you just need to sub. h=0 into the given equation and solve for t

    0= -16tsquare + 100

    cheers

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  2. Thanks for the help. :)

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