SOLUTION: Tom hits a volleyball at an equation like y=16t^2+31t+2. After how much time will it take for the volleyball to hit the ground?

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Question 757737: Tom hits a volleyball at an equation like y=16t^2+31t+2. After how much time will it take for the volleyball to hit the ground?
Found 2 solutions by Alan3354, stanbon:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Tom hits a volleyball at an equation like y=16t^2+31t+2. After how much time will it take for the volleyball to hit the ground?
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When y = 0
16t^2+31t+2 = 0
Solve for t

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Tom hits a volleyball at an equation like y=-16t^2+31t+2. After how much time will it take for the volleyball to hit the ground?
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y is the height of the ball at time = t seconds.
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Height is zero when ball hits the ground:
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-16t^2+31t+2 = 0
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t = [-31 +- sqrt(31^2-4*-16*2)]/(-32)
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Find the Positive solution.
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Cheers,
Stan H.
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