Question on speed and velocity

[koshal303]

1.

a stone is dropped in a well is heard to hit the water after 4 sec what will be the depth of the well if the velocity of sound is 350m/s ?


3. the time taken by stone to reach the water surface is T1 and the time taken by the sound to reach out is T2 now T1+T2 = 4 sec.
thats all i could do

 

[wukunlin]

an eerily similar questions:
https://www.physicsforums.com/showthread.php?p=3493086

 

[mstud]

You only need to change 3.5 s in the other question with 4.0 s in your task :)

You are welcome to ask if you wonder how I did something there...