(adsbygoogle = window.adsbygoogle || []).push({}); A golfer drives a ball with initial angle

θ = 45 from a tee at the origin. The ball

hits a window at height h = 10m a distance

D = 80m away.

a. Find the initial launch speed v0 of the ball.

b. Suppose a second golfer tees off from the

same spot at an unknown angle and speed,

and miraculously her shot also hits the window

at the same height 1.8 s after launch. With

what speed did it hit the window?

c. Was her ball ascending or descending or in level flight when it hit?

y(x) = tan*x -.5*g*(x^2/v0^2*cos^2)

part a was easy enough, i solved the above trajectory equation for v0 to get v0=30m/s, but after that i cant figure out how to solve part b and c. it seems everything i could solve for to get the velocity of impact requires knowing the initial angle and initial speed

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# Homework Help: Trajectory question(find spped of impact)

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