janfirs22 janfirs22

01-05-2024
Physics

Answered

6. A 70 kg boy sits in a 30 kg canoe at rest on the water. He holds two cannonballs, each of mass 10 kg. He picks them up and throws both together over the stern of his canoe. The two balls leave his hands with a velocity of 5.0 m/s relative to the canoe. A 50 kg girl sits in a 50 kg canoe, also at rest on the water. She also holds two 10 kg cannonballs. However, she throws them over the stern of her canoe one at a time, each ball leaving her hands with a velocity of 5.0 m/s relative to the canoe. Assuming negligible friction between the water and the canoe (a poor assumption), calculate the final velocity for each canoe.

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