 #1
rabsta00
 3
 0
 Homework Statement:
 Hikers came across a deep narrow well and decided to find its depth. They dropped a pebble into the well and heard the sound of the pebble hitting the bottom of the well in 7s. Using this information they found the depth of the well. How deep is the well? Assume that the velocity of sound is 340m/s.
 Relevant Equations:

v=v0gt
y=y0+v0t0.5gt^2
t=7s
v=340m/s
v=v0gt
340=v09.8x7
v0=408.6
d=d0+v0t0.5gt^2
d=0+408.6x70.5x0.8x7^2
d=2620.1m
this is what I've done but apparently is incorrect, not sure why or what the proper method is
v=340m/s
v=v0gt
340=v09.8x7
v0=408.6
d=d0+v0t0.5gt^2
d=0+408.6x70.5x0.8x7^2
d=2620.1m
this is what I've done but apparently is incorrect, not sure why or what the proper method is