Answer to Question #64452 in Classical Mechanics for Kim Caterlina

Question

While lying on the the beach near the equator watching the sun set over a calm ocean, you start a stopwatch just as the top of the sun disappears. You then stand elevating your eyes by a height of 1.70 m and see the sun again. You stop the watch when the top of the sun disappears again. if the elapsed time is 574 s, what is the radius of the earth?