Our friend, the spy who escaped from the diamond smugglers in Chapter 1 (Problem 38 of Section 4), is on a secret mission in space.

57. Our friend, the spy who escaped from the diamond smugglers in Chapter 1 (Problem38 of Section 4), is on a secret mission in space. An encounter with an enemyagent leaves him with a mild concussion and temporary amnesia. Fortunately, hehas a book that gives the formula for the motion of a projectile and the values ofg for various heavenly bodies (32 ft/sec2 on earth, 5.5 ft/sec2 on the moon, 12ft/sec2 on Mars, and 28 ft/sec2 on Venus). To deduce his whereabouts, he throwsa rock vertically upward (from ground level) and notes that it reaches a maximumheight of 37.5 ft and hits the ground 5 seconds after it leaves his hand. Where is he?