How can something fall an amount of squared feet per unit time? Falling = height = 1 dimension.
A stone is dropped into a well and the report of the stone striking the bottom is heard 7.7 seconds after it is dropped. Assume that the stone falls 16t squared feet in t seconds and that the velocity of sound is 1,120 feet per second. The depth of the well is:
2. The total time is split into two parts: The time t which is needed by the falling stone and the remaining time (7.7 - t) which is needed by the sound. The falling stone and the sound have to pass the same distance d:
3. Solve for t:
4. Plug in the value of t into one of the equations determining d to get the depth of the well.