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Kagome_gurl8

  • 3 years ago

The function y=-16t^2+384 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.

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  1. CalebBeavers
    • 3 years ago
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    Plug in 0 for y and then solve for t 0=-16t^2+384

  2. Kagome_gurl8
    • 3 years ago
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    this is my answer 6.93 seconds is it correct?

  3. CalebBeavers
    • 3 years ago
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    I got 4.90...

  4. CalebBeavers
    • 3 years ago
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    16t^2=384 t^2=24 \[t=\sqrt{24}\]

  5. Kagome_gurl8
    • 3 years ago
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    oh i miscalculated. thank you

  6. CalebBeavers
    • 3 years ago
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    You're welcome

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