Question

A boy shouts and hears the echo from a tall building 2.2 s later.

The speed of sound in air is 330 m/s.
How far away from the boy is the building?

A : 150m
B : 300m
C : 360 m
D : 730 m

Answer 1

The building is approximately 730 m away from the boy.

Therefore the correct answer is option D 730 m

Step-by-step explanation:

To calculate the distance between the boy and the building, we need to use the equation:

Distance = Speed x Time

Given that the speed of sound is 330 m/s and the time delay is 2.2 seconds, we can plug in the values:

Distance = 330 m/s x 2.2 s = 726 m

So, the building is approximately 730 m away from the boy.