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Gayle runs at a speed of 4.17 m/s and dives on a sled, which is initially...

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Physics

Gayle runs at a speed of 4.17 m/s and dives on a sled, which isinitially at rest on the top of a frictionless snow-covered hill.After she has descended a vertical distance of 4.52 m, her brother,who is initially at rest, hops on her back and together theycontinue down the hill. What is their speed at the bottom of thehill if the total vertical drop is 17.3 m? Gayle's mass is 52.8 kg,the sled has a mass of 5.45 kg and her brother has a mass of 33.1kg.

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