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Holly drives a 1110kg red car at 12m/s south. Liam drives a 1400kg silver car 20m/s...

Holly drives a 1110kg red car at 12m/s south. Liam drives a 1400kg silver car 20m/s east and crashes into the red car. The two cars become entangled. Determine the final velocity of the entangled mass.

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