A driver, traveling at80 km/h, brakes her 2000 kg truck to stop for a red light.How much internal energy is produced?

oubaas2021-04-08T04:36:46Z

KE = 2000/2000*(80/3.6)^2 = 494 kjoule

10

Anonymous2021-04-08T02:36:33Z

E = initial KE = ½mv² = ½ * 2000kg * (80/3.6 m/s)² = 4.94E5 J
which I would round to 500 kJ based on the data.

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