A boy finds an abandoned mine shaft in the woods, and wants to know how deep the hole is. He drops in a stone, and counts 4 seconds before he hears the "plunk" of the stone hitting the bottom of the shaft. Approximately how deep is the shaft? (Assume a gravitational acceleration of 9.8 m/s2 and no significant air resistance.)

Question

Lee Herrera

22 February, 22:59

+2

Answers (1)

Know the Answer?

Byron Snow · Answer 1

S = (0x4) + (0.5x4.81x4x4)

S=0.78.48

The depth is approximately 78 meters.

(My brain hurts now) : P Good Luck!