The Top Thrill Dragster at Cedar Point amusement park in Sandusky, Ohio, is one of the world’s most impressive roller coasters. Wearing only a lap harness in the open air, riders on a 10.5-ton train are accelerated by hydraulic motors on a level track to 120 mph in just 3.8 s. After this, no more power is supplied to the train, and it moves on its own. The train shoots straight up (twisting along the way) along the track to a height of 420 ft, before a straight-down descent. Assume that drag and friction do about –1.2 MJ of work on the train before it reaches the top. Determine the speed of the train moving at the top of the ride. Round the final answer to the nearest whole number.

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