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tmybby

  • one year ago

The function y = –16t2 + 224 models the height y in feet of a stone t seconds after it is dropped from the edge of a vertical cliff. How long will it take the stone to hit the ground? Round to the nearest hundredth of a second. a. 0.25 seconds b. 5.29 seconds c. 7.48 seconds d. 3.74 seconds

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  1. radar
    • one year ago
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    Looking at the function, you can see that the cliff is 224 feet (by letting t=0) 16t^2 - 224 = 0 dividing by 16 getting t^2-14=0 t^2 = 14 take square root of both sides t=3.74 seconds

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