(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A diver leaves a 3-m board on a trajectory that takes her 2.5 m above the board, and the into the water a horizontal distance of 2.8 m from the end of the board. At what speed and angle did she leave the board? Book answer is 7.2 m/s at 77 degrees to the horizontal.

2. Relevant equations

y= y0 + vy0t - 1/2gt^2

y = x tan theta0 - g/2v0^2 cos^2 theta0*x^2

3. The attempt at a solution

If the origin is at water level, then at the top of the dive vy0 = 0,and 1/2/gt^2 = 5.5 m. Therefore, t = 1.06 s. I still have two unknowns, v0 and theta, but only one equation.

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

2. Relevant equations

3. The attempt at a solution

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Projectile motion of a diver

**Physics Forums | Science Articles, Homework Help, Discussion**