Question

A student releases a ball from a height of 100 cm above the ground. It bounces to a height of 80 cm. Answer the following questions according to the diagram

Answer 1

if α = 90°, then the formula simplifies to: hmax = h + V₀² / (2 * g) and the time of flight is the longest. ...

if α = 45°, then the equation may be written as: ...

if α = 0°, then vertical velocity is equal to 0 (Vy = 0), and that's the case of horizontal projectile motion.