I imported a background and ball object. My game screen is in portrait and I want the ball to start from the left side of the screen (off screen) and move across the screen to the right (off screen) I set the linear velocity to a speed of 10.00 and I have sleep and wake up disabled. When I start the game to test the ball stops midway. The game doesn't end because I added a game over screen to ensure that wasn't happening The only way the ball makes it across the screen is if i increase the speed to about 25.00. so it seems to me that the ball is set to sleep after a certain amount of time but this isnt the case Any ideas?