Question

Safawi kicked a ball with an initial speed of 20 ms-1 at 30o angle. If the ball experienced a constant vertical acceleration of -9.81 ms-2, calculate the ball’s maximum height and distance.

Answer 1

$h=\frac{v^2\sin^2\alpha}{2g}=5.1~m,$

$l=\frac{v^2\sin2\alpha}g=35.3~m.$