Question

A stone is projected from a horizontal plane it attains a maximum height h and strikes a stationary wall and force on the ground vertically below the maximum height

Answer 1

let, maximum height = H

y- direction,

Uy = usin theta

Vy = 0

Ay = -g

Sy = H

V² = U²+ 2AS

0² = (usin theta)² + 2*-g*H

2gH = u²sin²theta

so,

H = u²sin²theta/2g