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Q. A certain freely falling object requires 1.7s to travel the last 37m before it hits the ground. From what height above ground did it fall?

Q. Suppose you had two small boxes, each containing 1.00 g of protons. If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light (and very long!) string, what would be the tension in the string? Express your answer in newtons and in pounds.

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