Late last Friday, one train on the WildCat didn't make it up a hill and then rolled backward, smacking into another train.
Cedar Point says nine people were treated for bruises and sprains at the amusement park's first aid station, and one was taken to a hospital to be looked at.
Park spokesman Bryan Edwards says the WildCat won't run again until the cause of the problem has been determined.
The state Department of Agriculture inspects amusement park rides. A spokeswoman there says inspectors suspect a problem with the ride's track.
The Associated Press