Question

if you hear a firecracker 2 second after it is fired his far away from it are you ?(assume the speed of sound in air to be 330m/s)​

Answer 1

If the firecracker is heard 2 seconds after firing, the total distance will be 660m. 

The velocity of the sound in the air is about 330m/s. 

Using the formula, speed=distance/time. 

330=d/2 

330*2=d 

660=d 

In this question, echo is not taken into account.