contributed by Michael Thackston
Department of Physics
Southern Polytechnic University, Marietta, GA
Here, the acceleration, a, is given by a combination of the initial force applied to the projectile, which propels it forward and up, and gravity, which propels it down until it hits the ground.
Look at the change in the shape of the trajectory, the maximum range, R (how far the projectile goes) and the maximum height, hmax (the height at the top of the parabolic trajectory) as you change the input variables.