Posted by **Rick** on Tuesday, May 11, 2010 at 9:57am.

Formula given: H=7+70t-16tsquared. Ball kicked straight up from a height of 7 feet. Ball travels 70 feet per second. How high is the ball after 3 seconds (t)?

- algebra -
**drwls**, Tuesday, May 11, 2010 at 10:15am
Plug in 3.0 for t in your H vs. t equation. You should not have a problem doing that.

- algebra -
**drwls**, Tuesday, May 11, 2010 at 10:18am
The equation you are given already takes into account the speed and direction that the ball was kicked, and the acceleration of gravity. All you have to do is substitute 3 for t and "turn the crank".

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