Question

While you are standing in front of a wall, you clap your hands and you can clearly hear an echo from the wall after 1.4 seconds. The speed of sound in air is 343M/S. Approximately how far are you standing from the wall?

Answer 1

We have the next information

t=1.4 sec

s=speed of the sound 343 m/s

d=?

`d=(s\cdot t)/(2)`

then we substitute the values

`d=((343)\cdot(1.4))/(2)`
`d=(480.2)/(2)`
`d=240.1m`

the distance is 240 m