The ball collided with a height of 73cm. He flew 13cm in 0.43 seconds. To make it clearer:

The ball collided with a height of 73cm. He flew 13cm in 0.43 seconds. To make it clearer: Xm = 13m Ym = 73cm t = 0.43s. Find the start speed and end speed.

Given:
Xm = 13cm = 0.13m
Ym = 73 cm = 0.73 m
t = 0.43 s
Find: v0 =? v =?
Decision:
The body moves horizontally at a constant speed
x = l = v0t
v0 = x / t
v0 = 0.13 m / 0.43 s = 0.3 m / s
The body falls freely vertically from the height Ym
v = gt
v = 10 m / s ^ 2 * 0.43 s = 4.3 m / s
Answer: v0 = 0.3 m / s, v = 4.3 m / s.