Projectile Motion Formulas A projectile is an object that is given an initial velocity, and is acted on by gravity. The path the object follows is determined by these effects (ignoring air resistance). 3. The punter on a football team tries to kick a football so that it stays in the air for a long ‘hang time’. If the ball is kicked with an initial speed of 25m/s at an angle of 60° above the ground, what is the ‘hang time’? a) 4.42s b) 2.21s c) 1.09s d) 0.52s 4.

Jul 22, 2014 · Throwing or shooting a projectile follows a parabolic course. If you know the initial velocity and angle of elevation of the projectile, you can find its time aloft, maximum height or range. You can also its altitude and distance travelled if given a time. This example problem shows how to do all of these. Projectile Motion Example Problem: