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September 18, 2014

September 18, 2014

Posted by **Wms** on Wednesday, September 19, 2007 at 11:37pm.

- Physics -
**drwls**, Thursday, September 20, 2007 at 1:57amThis question was asked a few days ago, but perhaps not by you. The equation for height (above the ground, in meters) vs time (in seconds) is

y = 70 + 3 t - (g/2) t^2

Use g = 9.8 m/s^2 and solve for the time when y = 0. The quadratic equation will give you two answers. Take the positive one.

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