Bouncing ball stops when hitting edge of platform

this should work:

 void Start()
     {
         rb = GetComponent<Rigidbody>();
     }
 
     void OnCollisionEnter(Collision collision)
     {
         rb.velocity = new Vector3(rb.velocity.x, 0, rb.velocity.z);
         rb.velocity = rb.velocity = new Vector3(rb.velocity.x, 10, rb.velocity.z);
     }

since it resets the ball's y velocity every time it lands on the ground and accelerates it the same amount every time. Just make sure the ball has a Rigidbody component.

I hope this helped!

Thanks @TheEmeraldRuby , I tried your code but I can't seem to get it to work right - it makes the ball bounce way above the platform, like it's bouncing on an invisible platform.

I think the answer could be in that OnCollisionEnter method though so I will keep playing around with that.