Need help please... thank u​

the answer from my side is both vertical and horizontal

Entirely horizontal

Explanation:

The ball begins the movement with horizontal and vertical velocity, but it is subject to the gravity acceleration, that will break the movement. When it achieves the top of the path, is when the vertical velocity go to 0 and begin to grow in the opposite direction, so in the very top of the path, the velocity is entirely horizontal

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

v=ir = 3x15 =45 v