I can do better. The textbooks say that the maximum range for projectile motion (with no air resistance) is 45 degrees. How do you get this? Here we go. First, just to be clear, what is projectile ...

When a projectile is moving through the air, however, it is subject to the force of gravity, which causes it to move down toward Earth. It is also subject to the force of air resistance ...

In a projectile motion problem, you assume that the air resistance is negligible. This means there is only the constant downward force of gravity. The ball will then have a constant x-velocity and ...