Find out the initial speed of the second stone
A stone is dropped into a river from a bridge 49.2 m above the water. Another stone is thrown vertically down 1.49 s after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second stone?
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A gambler has a fair coin (with one head and one tail) and a two-headed coin. He selects one of the coins at random, and when he flips it, it shows heads. Suppose that he flips the same coin a second time and again it shows heads. Then he flips th
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