The script calls for Robin to accelerate the train so that Batman can keep from slipping and have time to gain a foothold in the ice. The technical director has asked you to find out if the stunt is feasible by working out the necessary acceleration magnitude for the train (realistically, the train can only accelerate at a maximum of about 0.5 m/s^2). The front of the train is sloped at 45 degrees from the horizontal.

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