Posted by **Confused** on Thursday, October 4, 2012 at 11:17pm.

At the top of the Washington monument, a bird drops an acorn into the reflecting pool 169m below. If the acorn has a massof 1.0 kg, with what velocity would it hit the water?

- Advanced physical science -
**Elena**, Friday, October 5, 2012 at 2:44pm
v=sqrt(2gh)

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