A car of mass 1291 kg is stopped at a stoplight. Another car of mass 2050 kg is approaching the stoplight behind the stopped car. The driver of the moving car (texting on a cell phone) does not notice the stopped car, and crashes into the stopped car with a speed of 11.39 m/s. If the collision is perfectly inelastic, what will be the speed of the two cars right after the collision?

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