Transfer momentum

I'm trying to make a simple 2D "Sonic the Hedgehog 2" type game.

Currently I have:

ball: has a CircleCollider2D (not a trigger), and a Rigidbody2D. The rigid body is set as Dynamic and uses Continuous collision detection.

To move the ball I use Rigidbody2D.AddForce() to add a force in the direction I want the ball to go.

Platform: has a 'EdgeCollider2D` (static) but no rigid body.

The platform is flat and at the end has an upwards curve that gradually goes from 0° (horizontal) to 90° (vertical). What I'm trying to achieve is have the ball move horizontally across the flat platform then when it reaches the part that starts curving upwards have the ball follow the curve.

The issue is that if the ball moves too slowly it can't make it up the curve. If it moves faster it ends up either: going through the curved platform; or just stopping dead half way up with very jerky movement.

I imagine the issue with the ball stopping is that the momentum of the ball is not being transferred properly to follow the curve of the platform. To try to fix this I have the code written such that it takes the normal of the collider contact point and and use that to rotate the ball's rigid body such that the up vector matches the normal of the contact point. Thus when adding a force it is now parallel to the collider surface. I also take the rigid body velocity and update it to be parallel to the ground surface using the same idea. This however doesn't seem to fix/update the momentum of the ball to follow along the path, and I still have issues with the ball going through the platform collider when moving moderately fast (not very fast).

How do I update the momentum of a rigidbody to follow a curve?