physics
posted by ajo .
A spelunker drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.50s after the stone is dropped. How deep is the hole?
how can i use the speed of sound to solve this problem?Please give me some hints!
Thanks a lot!

The time required to hear the impact is the sum of the time for the stone to fall and the time for the sound wave to reach the top of the hole.
If the hole depth is X,
1.50 seconds = sqrt (2X/g) + X/v
where v is the speed of sound and g is the acceleration of gravity.
Solve for X 
10.6m
Respond to this Question
Similar Questions

Physics HELP!
A mountaineer estimates the depth of a crevasse by dropping a stone and listening for sound when the stone hits the bottom. The speed of sound in air is 340m/s. If the sound is heard 10s after the stone is dropped, what is the depth … 
physics
A spelunker drops a stone from rest into a hole. The speed of sound is 343m/s in air, and the sound of the stone striking the bottom is heard 1.46s after the stone is dropped. How deep is the hole? 
physics
A stone is dropped into a deep canyon and is heard to strike the bottom 15s after release. How deep is the canyon? 
physics
You drop a stone into a deep well and hear it hit the bottom 1.90 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. … 
physics
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 3.24 s after the stone is dropped. How deep is the hole? 
physics
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 3.87 s after the stone is dropped. How deep is the hole? 
Physics(Please help)
1) A cave explorer drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.33 s after the stone is dropped. How deep is the hole? 
Physics(Please respond)
1) A cave explorer drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 1.33 s after the stone is dropped. How deep is the hole? 
physics
You drop a stone into a deep well and hear it hit the bottom 4.40 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. … 
science
A stone is dropped into a well of 80m deep. The sound of splash is heard 4.20 sec after the stone is dropped. Find the velocity of sound in air.