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.
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?
1 answer