If a stone falls to the bottom of a mineshaft in 6 seconds, then the depth of the shaft is about
A)60 m.
B)120 m.
C)180 m.
D)more than 200 m.

Question

Quizplus · Accepted Answer

Using the formula d = (1/2)gt^2, where d is the depth of the mineshaft, g is the acceleration due to gravity (approximately 9.8 m/s^2), and t is the time it takes for the stone to fall to the bottom, we can solve for d:

d = (1/2)(9.8 m/s^2)*(6 s)^2
d = 176.4 m

Therefore, the depth of the mineshaft is approximately 180 m. The closest answer choice is C.

If a Stone Falls to the Bottom of a Mineshaft