In 1896, an agent for a regional railroad arranged a train crash for promotional purposes. Two locomotives were parked at opposite ends of a 6.4 km-long track, had their throttles tied open, and crashed head-on in front of 30,000 spectators. Assume each locomotive had a weight of 1,200,000 N and each had an acceleration of 0.26 m/s2.
(a) What was the speed of each locomotive right before the moment of impact?
(b) How much total kinetic energy was possessed by the locomotives right before impact? Note: 1 pound of TNT is equivalent to about 2 × 106 J.
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