Question
Jennifer serves the volleyball to Debra with an upward velocity of 10.5ft/s. The ball is 5 feet above the ground when she strikes it. How long does Debra have to react, before the volleyball hits the ground? Round your answer to two decimal places.
Answers
Steve
since the height y is given by
y = 5.0 + 10.5t - 4.9t^2
just solve for t in
5.0 + 10.5t - 4.9t^2 = 0
y = 5.0 + 10.5t - 4.9t^2
just solve for t in
5.0 + 10.5t - 4.9t^2 = 0