A stone is dropped down a well and hits the water 2.50 s later. What is the depth from the edge of the well to the water? 61.3, 12.3, 30.6

Answer;

30.6 m

Explanation;

All objects accelerate at the constant rate in the Earth's gravitational field. The gravitational acceleration, g = 9.8 m/s².

Distance traveled by an object falling down under a constant acceleration will be given the formula;

s = ut² + 1/2 (gt²); but u the initial velocity is o

thus;

S = 1/2 (gt²)

= 0.5 * 9.81 * 2.5 ²

= 30.65

≈ 30.6 m