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anonymous

  • one year ago

how do i find the seconds it'll take If an object is projected upward from ground level with an initial velocity of 96ft/sec, its height h in feet after t seconds is given by the equation h=-16t^2+96t

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  1. Agl202
    • one year ago
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  2. Agl202
    • one year ago
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    @Sooch ???

  3. anonymous
    • one year ago
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    @Agl202 That's the whole problem on my worksheet and it then asks "After how many seconds does the object hit the ground?"

  4. anonymous
    • one year ago
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    When it hits the ground, the height is \(\color{olive}{0}\). \( \color{blue}{h}=-16t^2+96t \) \( \color{blue}{0}=-16t^2+96t \) \(\tt{solve}~{for}~{\color{red}{ t.}}\)

  5. anonymous
    • one year ago
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    so i factor out -16t+96?

  6. anonymous
    • one year ago
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    Exactly!

  7. Defiance
    • one year ago
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    Yes. (Sooch I also typed a reply on your other question. )

  8. anonymous
    • one year ago
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    okay thank you @mathway

  9. anonymous
    • one year ago
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    \(\huge -16(t-6)=0\)

  10. anonymous
    • one year ago
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    No problem!

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