Ask a New Question

Question

A rock is thrown downward into a well that is 8.58 m deep. If the splash is heard 1.08 seconds later, what was the initial speed of the rock?
10 years ago

Answers

bobpursley
time for sound to come up the well:
time=depth/speedsound=8.58/342m/s

subtract that from 1.08 seconds.
The remainder is the time it took the rock to get to the bottom.

depth=vi*t+1/2 g t^2
put in time, depth, and g, solve for vi.
10 years ago

Related Questions

A stone is thrown downward into a well with an initial speed of 5.00 m/s. The sound of splash is hea... A package is thrown downward with an initial velocity of -5 ft/sec from a helicopter at 300 ft. A) w... A rock is thrown downward from an unknown height above the ground with an initial speed of 28 m/s.... A stone is thrown downward with a speed of 12 m/s from a height of 20 m. (acceleration due to gravit... A 2kg rock is thrown downward from a height of 3 meters with an initial velocity of 4 m/s. Just befo... A rock is thrown downward from an unknown height above the ground with an initial speed of 10m/s. It... if a ball is thrown downward from a roof top 100meters tall and hits the ground in 3 seconds how har... An object is thrown downward at 35.0 m/s from a great height. What is its velocity after 5.0 s? rock is thrown downward from the top of a cliff with an initial speed of 12 m/s, disregarding air r... 13. A ball is thrown downward from the top of a building with an initial speed of 25 m/s. It strike...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use