SOLUTION: Use the function V = 16t^2 + 15t, where t is the amount of time a basketball player can remain airborne when jumping and V the vertical leap in inches . A basketball player has a v

Question 1103121: Use the function V = 16t^2 + 15t, where t is the amount of time a basketball player can remain airborne when jumping and V the vertical leap in inches . A basketball player has a vertical leap of 39 inches. What is his hang time? Round your answer to the nearest 10th of a second.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Use the function V = -16t^2 + 15t, where t is the amount of time a basketball player can remain airborne when jumping and V the vertical leap in inches . A basketball player has a vertical leap of 39 inches. What is his hang time?
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Notice the minus sign added.
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Find the time at the vertex:
It's at t = -b/2a = 15/32 seconds
that's 15/32 rising and 15/32 falling
= 15/16 seconds
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Leap height is 42.1875 inches, not 39
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