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Sam and Terry find a 30.0 m deep wishing well and decide to make a wish. Terry throws a penny down the well at 3.00 m/s and Sam...Asked by Tarek
Sam and Terry find a 21.0 m deep wishing well and decide to make a wish. Terry throws a penny down the well at 7.00 m/s and Sam throws a penny up in the air at the same speed. If they threw them at the same time, how much time would there be between splashes?
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Answered by
oobleck
The depth of the well does not matter.
How long does it take the coin thrown upwards to come back down to the top of the well?
7.00 - 9.81t = 0
That is how long it takes to stop rising and start falling. Double that, and you have the time between splashes.
How long does it take the coin thrown upwards to come back down to the top of the well?
7.00 - 9.81t = 0
That is how long it takes to stop rising and start falling. Double that, and you have the time between splashes.
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