SPY STORY Our friend, the spy who escaped from the diamond smugglers in Chapter 1 (Exercise 46 of Section 1.4), is on a secret mission in space. An encounter with an enemy agent leaves him with a mild concussion and temporary amnesia. Fortunately, he has a book that gives the formula for the motion of a projectile and the values of gfor various heavenly bodies (32 ft/sec2 on earth, 5.5 ft/sec2 on the moon, 12 ft/sec2 on Mars, and 28 ft/sec2 on Venus). To deduce his whereabouts, he throws a rock vertically upward (from ground level) and notes that it reaches a maximum height of 37.5 ft and hits the ground 5 seconds after it leaves his hand. Where is he?
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