Posted by Clarissa on Sunday, April 22, 2012 at 6:44pm.
I am still getting the wrong answrs, can you please do me a favor and for each part list the formulas and steps i need to do in order to get the answer. thank you
At serve, a tennis player aims to hit the ball horizontally.
part a)What minimum speed is required for the ball to clear the 0.90mhigh net about 15.0m from the server if the ball is "launched" from a height of 2.50m ?
part b)here (relative to server) will the ball land if it just clears the net?
part c)Will it be "good" in the sense that it lands within 7.0m of the net? yes or no ?
part d) How long will it be in the air?

@damon  Damon, Sunday, April 22, 2012 at 6:51pm
I continued down below, scroll again
Do you agree on the first answer? the horizontal speed?

@damon  Clarissa, Sunday, April 22, 2012 at 6:56pm
yeah i got 26.3 because i round it off for the speed

@damon all worked out  Damon, Sunday, April 22, 2012 at 6:58pm
At serve, a tennis player aims to hit the ball horizontally.
part a)What minimum speed is required for the ball to clear the 0.90mhigh net about 15.0m from the server if the ball is "launched" from a height of 2.50m ?
part b)here (relative to server) will the ball land if it just clears the net?
part c)Will it be "good" in the sense that it lands within 7.0m of the net? yes or no ?
part d) How long will it be in the air?
======================
u = 26.25 until it hits ground
how long to fall 2.5 m?
2.5 = 4.9 t^2
t =.714 second to hit ground
where will it be?
26.25 * .714 = 18.74 total horizontal dist
18.74  15 = 3.74 into opposite side, good shot
time in air was .714 s

@damon  Clarissa, Sunday, April 22, 2012 at 7:10pm
thank you, I will calculate everything again and see where I made my mistakes and compare it to these answers. Thanks alot really appreciate it
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