A child and sled with a combined mass of 49.0 kg slide down a frictionless hill that is 8.76 m high. If the sled starts from rest, what is its speed at the bottom of the hill

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A girl runs at a speed of 4.00 m/ s and dives onto a sled initially at rest on the top of a frictionless, snowy hill. After she has descended a vertical distance of 5.00 m, her little brother hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the vertical drop is 15.0 m? The girls mass is 50.0 kg, the boys mass is 30.0 kg, and the sleds mass is 5.00 kg.

Suppose a child on a sled has just reached the bottom of 8th-streethill after sliding down
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A child and sled with a combined mass of 49.0 kg slide down a frictionless hill that is 8.76 m high. If the sled starts from rest, what is its speed at the bottom of the hill

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Physics: Principles with Applications

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