Dropping a Stone: Calculating Time for a Stone to Hit the Bottom of a Mineshaft

  • Thread starter Thread starter gapgirl1010
  • Start date Start date
gapgirl1010
Messages
21
Reaction score
0
A girl drops a stone into a mineshaft 122.5 m deep. How soon after she drops the stone does she hear it hit the bottom?

What formula do I use?
 
Physics news on Phys.org
You are looking for the constant acceleration formulas. A quick search on google or wikipedia should provide them. Also don't forget about the period of time that sound would take to travel from the point of impact to the girl's ear. You can find the speed of sound with a google search too. =)
 
Last edited:

Thread 'Modeling a graph that shows age in relation to depth of an ice sample'

To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
View full post »

Similar threads

A stone is dropped from an ascending balloon...
Replies
10
Views
976
Gravity at the bottom of a mineshaft
Replies
5
Views
4K
Calculate Time for Stone to Hit Bottom of 180m Well at 20C
Replies
9
Views
2K
Calculating Time for Sound to Reach Bottom of Mine Shaft
Replies
7
Views
5K
How much pressure in PSI was needed in the Ancient World to cut stones?
Replies
8
Views
3K
Calculating Initial Velocity of a Thrown Object Using Free-fall Equations
Replies
23
Views
3K
Stones Meet: Dropped & Thrown from Bridge
Replies
5
Views
3K
A ball is dropped from the top of a 55.0 m high cliff
Replies
8
Views
6K
What Determines the Meeting Point of Two Falling Stones?
Replies
5
Views
2K
MHB How to Calculate Initial Speed and Impact Speed of a Vertically Thrown Stone?
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top