If continents continue to drift, is it possible that a new supercontinent will form ? which continents might be next to each other 200 million years from now.

Yes, it is already happening. About 270 million years ago the continents collided to form Pangea, and now, after the continents separated they continue to drift apart. Attached is a picture of what it may all look like when they recollide. Scientist are still not really sure. 

If football was tossed in air without gravity or friction the ball would go into space