not proper collision in box2d
I am developing a game in which the user have to hit a high speed ball. To hit the ball I have joined a rectangular body with the actor using revolute joint and enabled its motor, to rotate it with a specified speed(motor speed). Now everything is perfect but sometime when ball`s velocity is high , it is bypassing the rectagular body. Using collision listner i found that collision is happening but ball is not getting reflected after collision. As this is happening only when ball is on a high speed, is it bcoz of density of bodies that are colliding . Or its the motor of revolute joint that is