Distance traveled by a rock dropped off of a cliff....

AI Thread Summary
A rock dropped from a cliff falls the first half of the distance in 2.0 seconds, prompting a question about the time taken to fall the second half. The discussion emphasizes the need to apply kinematic equations for motion under constant acceleration due to gravity to solve the problem. The original attempt at a solution involved an incorrect application of mathematical principles. Clarification is sought on the reasoning behind the initial approach. Understanding the correct kinematic equations is essential for determining the total fall time accurately.
Carol-Anne
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Homework Statement


a rock is dropped off a cliff and falls the first half of the distance to the ground in 2.0 seconds.

Homework Equations


How long will it take to fall the second half?

The Attempt at a Solution


i thought if i took the square root of two and then subtracted that from 1/2t that would be the answer but apparently not
 
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Welcome to the PF.

Please write out the equations of kinematic motion in a constant acceleration force field (gravity). That will help you to start to show your Attempt at the Solution. Thanks.:smile:
 
Carol-Anne said:

The Attempt at a Solution


i thought if i took the square root of two and then subtracted that from 1/2t that would be the answer but apparently not
What was your reasoning here?
 
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