So that very continuation of rotation carries all the mass of the earth around it along with you. That momentum carries through and you are effectively rotating with the earth (ie spinning alongside it)

When you jump, you are not countering the rotational momentum you are experiencing, because you are jumping from within the rotating body, because you are undergoing that same continuing rotation.

The jump lifts you from the point on the surface of the earth, but it doesn't remove the rotational momentum you are undergoing relative to the earth as whole (including it's atmosphere etc)

When planes fly, they are flying within the fluid air medium which is also near the surface undergoing very similar momentum. So the air is also rotating and the plane is merely within it. So when it travels, the air is still rotating around the centre axis along the poles as well so it carries along with the general atmosphere.

When a fish swims through a stream, it doesn't move the stream, yet it may fight harder against the current. The stream is still flowing and if the fish stops fighting it, the stream carries it away.

So that very continuation of rotation carries all the mass of the earth around it along with you. That momentum carries through and you are effectively rotating with the earth (ie spinning alongside it)

When you jump, you are not countering the rotational momentum you are experiencing, because you are jumping from within the rotating body, because you are undergoing that same continuing rotation.

The jump lifts you from the point on the surface of the earth, but it doesn't remove the rotational momentum you are undergoing relative to the earth as whole (including it's atmosphere etc)

When planes fly, they are flying within the fluid air medium which is also near the surface undergoing very similar momentum. So the air is also rotating and the plane is merely within it. So when it travels, the air is still rotating around the centre axis along the poles as well so it carries along with the general atmosphere.