When I drop a ball from the sky onto a ramp the ball doesn't seem to roll down the ramp it just seems to slide. How do i get the ball to roll?
What materials did you define for the ball and ramp?
If you set both to Ice, its no wonder it glides down ;).
try:
ramp.setMaterial(Material.CONCRETE);
ball.setMaterial(Material.RUBBER);
yep - and probably give the tutorials a shot