# Physics

The goblins fists cut through the air and connects with the dwarfs face in an elastic collision. The goblins fists each weigh 2kg and the dwarfs head weighs 5kg. What is the kinetic energy imparted to the dwarfs face by the goblins fists if the goblins fists had an initial velocity of 5m/s?
What formula would I use to solve this? How do i solve this problem?

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1. Use conservation of momentum and conservation of kinetic energy (since it's an elastic collision.)

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posted by Kiwi

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