Question

estimate the height of water well martha and chandrapur heavy rock into dual 8 seconds after the rock is dropped the hurt a splash caused by impact of the rock on the water speed of sound in air is 340 ms what is the height of the well​

Answer 1

Answer:

Correct option is

B

19.6 m

Time taken by the stone to reach the water surface

t

1

=

g

2h

, where h is the height of the well.

Time taken by the sound to reach the observer

t

2

=

350

h

Total time

t=t

1

+t

2

=

g

2h

+

350

h

=

4.9

h

+

350

h

=2.056

Solving the above Eqn. we get

h=19.6 m