Question

The speed of sound (shockwave) in an explosion is 100mph. How many seconds does the shockwave reach 2km away?​

Answer 1

t = 44.73 s

Explanation:

Given that,

The speed of a sound wave, v = 100 mph = 44.704 m/s

We need to find the time taken by the shockwave to reach 2 km i.e. 2000 m

We know that,

Speed = distance/time

So,

`t=(d)/(v)\\\\t=(2000)/(44.704)\\\\t=44.73\ s`

So, it will take 44.73 seconds to reach 2 km.