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Two carts on an air track slide towards each other. The first mass 7kg is going...

Two carts on an air track slide towards each other. The first mass 7kg is going left to right at 9.0 m/s. The second of a mass 7kg is going right to left at 2.0m/s. They collide and stick together. What is their speed in M/S afterwards?
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Answer #1

Take the direction to the right as positive. Use momentum conservation principle to find the required speed as shown below. Since the crates stick together, they will have common speed after collision.foom momentum conservation poinciple, (7kg) (9m/s) + (719) (-2m/s) = (7197719) 3) ve 3-5 m/s***********************************************************************************************
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