SOLUTION: If a ball is released to a fall down from the top of a building 30 meters high, how many seconds will it take for the ball to reach the ground?

Question 610385: If a ball is released to a fall down from the top of a building 30 meters high, how many seconds will it take for the ball to reach the ground?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If a ball is released to a fall down from the top of a building 30 meters high, how many seconds will it take for the ball to reach the ground?
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h(t) = -9.8t^2 + 30
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When the ball hits the ground h(t) = 0
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Solve:
-9.8t^2+30 = 0
9.8t^2 = 30
t^2 = 3.06
time = 1.75 seconds
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Cheers,
Stan H.
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