A 50 kg ball with a horizontal velocity of 20 m/s is dropped from a height of 20 m. How long does it take to hit a piston of area 50 cm²?

Here are the solutions to the problems:

14.
Given:
Mass of ball, $m = 50 \, \text{kg}$
Horizontal velocity of ball, $u_x = 20 \, \text{m/s}$
Vertical height, $H = 20 \, \text{m}$
Area of piston A, $A_A = 50 \, \text{cm}^2$
Weight on piston B, $F_B = 25200 \, \text{N}$
Acceleration due to gravity, $g = 10 \, \text{m/s}^2$

i) The time taken by the ball to strike the surface of piston A.
For vertical motion, we use