I'm not sure if this is the right forum, but I wasn't sure where to post this. I was just wondering how long a basic high school physics problem should take you for you to be considered proficient. Specifically, projectile motion problems and force/tension problems that require you to look at the x- and y-components of the force vectors. For example, a problem modeled by this picture (on the left) where you are given 3 pieces of information and you have to find the fourth (either vi, d, h or theta) and the final velocity of the water. Or a problem like this where you are given the angles and the mass of the bag. Thanks!