ch04-p123 - 123. Using the same coordinate system assumed...

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123. Using the same coordinate system assumed in Eq. 4-25, we find x for the elevated cannon from yx gx v y =− = tan cos θ 0 2 00 2 2 30 b g where m. Using the quadratic formula (choosing the positive root), we find xv vv g y g = +− F H G G I K J J 2 2 cos sin θθ bg which yields x = 715 m for v 0 = 82 m/s and
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