What is the Distance Between Two Stones Dropped from a Well in One Second?

[myoplex11]

Homework Statement

A stone A is dropped from rest down a well, and in 1 s another stone B is dropped from rest. Determine the distance between the stones another second later.
The well is 80ft deep

Homework Equations

V=V0+at
X =X0+V0t+.5at^2

The Attempt at a Solution

nce apart= distance first-distance2nd
= 1/2 g t^2 - 1/2 g(t-1)^2
so, at t=2
= 1/2 g 4 - 1/2 g 1
this is not giving me the correct anwser. Correct anwser is 48.3ft

 

[tiny-tim]

dnce apart= distance first-distance2nd
= 1/2 g t^2 - 1/2 g(t-1)^2
so, at t=2
= 1/2 g 4 - 1/2 g 1
this is not giving me the correct anwser. Correct anwser is 48.3ft

Hi!

Looks ok to me. What figure are you using for g?

 

[Hootenanny]

Your answer is correct. Don't forget to convert meters to feet.