To determine the height of a bridge above the water, a person drops a stone and measures the time it takes for it to hit the water. If the time is 2.3 s, what is the height of the bridge?
A) 10 m
B) 14 m
C) 26 m
D) 32 m
E) 52 m

Question

Quizplus · Accepted Answer

The height of the bridge can be determined using the formula:

h = (1/2)gt^2

where h is the height, g is the acceleration due to gravity (9.81 m/s^2), and t is the time taken.

Plugging in the given values, we have:

h = (1/2) × 9.81 m/s^2 × (2.3 s)^2
h = 26.05 m

Rounding off to the nearest meter, we get the answer as 26 m.

To Determine the Height of a Bridge Above the Water