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Problem 3.13

3.13.

We want to figure out what the initial velocity in the y direction is so that gravity causes the ball to rise to exactly the height of the net.

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tex2html_wrap_inline383

tex2html_wrap_inline385

We can substitute into our equation for y with the knowledge that tex2html_wrap_inline389 . This leads to the relation that tex2html_wrap_inline391 .

tex2html_wrap_inline393

tex2html_wrap_inline395

Therefore, solving yields,

tex2html_wrap_inline397


Jason George Zeibel
Fri Sep 26 03:10:45 EDT 1997