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Q. A barefoot field-goal kicker imparts a speed of 31 m/s to a football initially at rest. The acceleration of gravity is 9.8 m/s2. What is the height of the tower?

Q. During the late 19th and early 20th centuries, direct observations showed that a glacier in Switzerland flowed forward in the downhill direction while its snout (terminus) was retreating higher up the valley? Which of the following explains these observations in a rational, scientific way?

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