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February 1, 2015

February 1, 2015

Posted by **Laura** on Sunday, September 12, 2010 at 4:38am.

- Physics -
**drwls**, Sunday, September 12, 2010 at 7:26amWrite and solve simultaneously two equations in two unknowns:

(1) the time of flight to the wall, T, and (2) the initial speed of the ball, V. The two equations describe the horizontal and vertical positions when the ball reaches the wall.

Y = 2 + Vsin40*T -(4.9)T^2 = 19

X = Vcos40*T = 149

There will be two solutions. Choose the one with positive T

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