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December 21, 2014

December 21, 2014

Posted by **Cooper** on Thursday, September 27, 2007 at 7:44pm.

- Twelfth Grade Physics -
**Cooper**, Thursday, September 27, 2007 at 8:07pmJust confused a little bit as to where to start. Can the 50 m also be the Range of the ball? And if that is so, can you use that to find v2, because the ball is falling at a constant of 9.81 m/s^2...and then you could say that Ryan runs the same velocity as the ball but in the opposite direction...is this wrong? I need a little push in the right direction!

- Twelfth Grade Physics -
**bobpursley**, Thursday, September 27, 2007 at 8:47pmFind out where the ball lands.

time in air:

hfinal=viy*t -1/2 g t^2

where vi=21*sin41, and hfinal=0

solve for time in air.

Then, distance:

x= vix*timeinair where vix=21cos41

Now you know where the ball will land.

Ryan has to start at 51m point, which direction does he run?

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