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Two cars are headed for an intersection. The first car has a mass of 1218 kg...

Two cars are headed for an intersection. The first car has a mass of 1218 kg and is approaching at v1 m/s due south. The second car has a mass of 846 kg and is approaching at 23.9 m/s due west. The two collide and the intersection and stick together. If the angle of the velocity after the collision is 20 degrees south of west, what is the velocity v1?

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