Two 1.0 metric ton cars crash into each other. Both collide head-on, and each was travelling...

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Physics

Two 1.0 metric ton cars crash into each other. Both collidehead-on, and each was travelling 27 mi/hr when the collisionoccurred. The wreckage is at rest after the collision. How muchthermal energy was gained by the cars and road in the collision?(in case you are worried, these were driverless vehicles with nopassengers inside!
Recall that a 100 W lightbulb uses up 100 Joules of energy in 1second. If there was a way that the thermal energy from theaccident described above could be completely captured and used topower such a bulb, how long would it stay lit?

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3.9 Ratings (756 Votes)

In the situation above each car has kinetic energy KE directly before the collision At the end of the collision both cars are at rest and the total kinetic energy of the system is 0 Since See Answer

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