Asked by Fred

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 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?

Answers

Answered by Steve
how long does it take a penny to rise and fall, starting at 3.0 m/s?

v = 3 - 9.8t

double that, and that's how long the first penny has been dropping before the 2nd gets back to the top of the well.
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