1. The problem statement, all variables and given/known data What is the DISTANCE travelled by the projectile? I know how to calculate the displacement, but this includes both x and y components, so how do I calculate the distance? I'm sure it must include both height and vertical displacement components 2. Relevant equations 3. The attempt at a solution I have no clue really. Everything I try to do, it just gives me the displacement. I just don't know how to get the 'h' factor in? Do I use pythagaros? Because it doesn't apply for a curved surface.