Question

Ali and Abdi go for a walk along an abandoned railroad truck , Ali puts one ear next to a rail, while Abdi 300m away taps in the rail with a stone . How much sooner does Ali hear the sound (speed of sound in steel is 6500m/s).

Answer 1

Ali hear the sound in 0.046 seconds.

Step-by-step explanation:

Given:

Distance between Ali and Abdi = 300m

Speed of sound in steel = 6500m/s

To Find :

How much sooner does Ali hear the sound = ?

Solution:

We can find the time in which the sound made by Abdi with a stone on the rail by using the speed formula

We know that

`Speed = (Distance)/(time)\\`

On substituting the given values,

`6500 = (300)/(time)\\`

`time = (300)/(6500)\\`

`time = (300)/(6500)\\`

Time = 0.046 seconds