# Zero angle launch problem: Find height given inital speed and angle

1. Sep 13, 2009

1. The problem statement, all variables and given/known data

A basketball is thrown horizontally with an initial speed of 4.40 m/s. A straight line is drawn from the release point to the landing point making an angle of 30.0o with the horizontal. WHAT WAS THE RELEASE POINT?

2. Relevant equations

tan$$\theta$$ = y/x
vfx= vix= 4.40 m/s
v2fy = v2iy - 2a$$\Delta$$y

a = -g = -9.81
[c]3. The attempt at a solution[/b]
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

2. Sep 13, 2009

### tiny-tim

(have a theta: θ )

Find the equation for x and t, and the equation for y and t, then put y = xtanθ, and eliminate t.