Physics

A rolling barrel with initial velocity 20 m/s encounters a hill 10m tall to slow it down
1. state where its angular speed is 0
2. state where its rotational kinetic energy will be 0
3. state where its translation kinetic energy will be 0
4. for each of the two flat surfaces compare the translational kinetic energy, rotational kinetic energy, and potential energy. (State which quantities are greater than or less than the other quantities).

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