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A calculator was dropped at an equation of d= 0.5*9.8t^2 + 5t
How long would it take for the calculator to hit the ground? HINT: SET THE EQUATION TO ZERO.

  • math - typo - ,

    so, follow the hint

    4.9t^2 + 5t = 0

    a product is zero if either factor is zero.

    Now, do you see a problem with your equation for d?
    Hint: if t>0, d will never be 0.

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