A student witnesses a flash of lightning and then t = 6.5 s later the student hears the associated clap of thunder. Light travels at 3.0 × 108 m/s in the air. How long, t1, in seconds did it take the light to reach the student's eyes after the flash?

Answer 1

First, find the speed of sound, and then recall that

distance = time * speed.

Then, since time = distance/speed, divide that distance by the speed of light.

Answer 2

1.08*10^8

Answer 3

0.00000743166