SOLUTION: a ball is tossed into the air at 40 feet per second from a height of 5 feet. how long will it take the ball to reach the ground?

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Question 876697: a ball is tossed into the air at 40 feet per second from a height of 5 feet. how long will it take the ball to reach the ground?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
a ball is tossed into the air at 40 feet per second from a height of 5 feet. how long will it take the ball to reach the ground?
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A commonly used equation is
h%28t%29+=+-16t%5E2+%2B+vt+%2B+h, t in seconds, h in feet
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h%28t%29+=+-16t%5E2+%2B+40t+%2B+5
Find when
h%28t%29+=+-16t%5E2+%2B+40t+%2B+5+=+0
-16t%5E2+%2B+40t+%2B+5+=+0
It's a quadratic, solve for t.
Ignore the negative value.