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In laboratory two air-track gliders collide and stick together because of Velcro tape on each of...

In laboratory two air-track gliders collide and stick together because of Velcro tape on each of them. Glider A has a mass of 200g and is moving to the right at 3.0 m/s before collision. Glider B has a mass of 100 g and is moving to the right at 1.0 m/ before the collision. What is their combined velocity after the collision?

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