Question

One of the contests at the school carnival is to throw a spear at an underwater target lying flat on the bottom of a pool. The water is 0.800 m deep. You're standing on a small stool that places your eyes 3.10 m above the bottom of the pool. As you look at the target, your gaze is 30∘ below horizontal. At what angle below horizontal should you throw the spear in order to hit the target?

Answer 1

Answer: The angle below horizontal you throw the spear in order to hit the target = 31 degree

Explanation: please find the attached files for the solution and figure