Is it possible to fly from norway to usa across the north pole?

Sure.  The Earth is a sphere (ball-shaped), so you can follow practically
any route you want from one place to another.  You could even fly from
New York to Chicago by way of the north pole.

If you want to draw a smooth curve from Oslo through the north pole to
a point in the USA, that's perfectly possible.  But it's not the shortest way
to travel between those two points.

Learned about life itself

Velocity is the speed of an object in a certain direction so you'd need to know speed and direction