How much work is done when a 900 N man spends 5 minutes pushing an immovable wall?
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Answer: B
Explanation:
You can use the conservation of momentum, under the assumption that no mass was lost when the collision occurred. The initial momentum of the system must equal the final momentum of the system. Our system is the region including, and only including, the satellite and the space debris. Classical momentum is defined as the product of mass and velocity:
Due to mass 1 equaling mass 2, we can factor these quantities out:
Cancel the mass term on both sides to get:
We have the initial and final velocities for everything besides the final velocity of the satellite. Plug everything in: