How much speed does the CB lose when it rebounds off a rail cushion?
For steep angles into a rail, where the CB path is close to perpendicular to the rail (i.e., almost straight into the rail), the CB loses about half of its speed after rebound and skid. For more information and demonstrations, see:
At very shallow angles to the rail, where the CB is moving almost parallel to the rail, very little speed is lost off the rebound.
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