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In the Back to the Future movies, a Delorean car of mass 1200 kg travels at 92 miles per hour to venture back to the

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In the Back to the Future movies, a Delorean car of mass 1200 kg travels at 92 miles per hour to venture back to the future. a. What is the kinetic energy of the Delorean? b. What spring constant would be needed to stop this Delorean in a distance 0.4 m? N/m Hint: For Part a., use the formula for kinectic energy. For Part b., use conservation of energy with elastic potential energy

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