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Kinetic energy = 1/2 M V2

1/2 (80) V2 = 15,000

V2 = 15,000/40 = 375

V = sqrt(375) = 19.365 meters/sec

If the student is enrolled at the Sorbonne or McGill, the speedometer reads 69.7 km/hr.

If the student goes to MIT or Univ. of Rochester, the speedometer reads 43.3 mph .

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Q: A 80 kg student traveling in a car with a constant velocity has a kinetic energy of 1.5 x104 J What is the speedometer reading of the car in?
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