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April 20, 2014

Homework Help: Applying Algebraic Thinking to Data

Posted by Rachelle on Friday, April 20, 2012 at 7:49pm.

Snoopy is in his plane, 4500 ft above ground. he fires a projectile straight up. The Vo of the projectile is 340 ft/s. (after the projectile is fired, it has no acceleration, so its height can be modeled by a "falling body" model). The Red baron is maintaining a constant altitude of 5200ft.
1. Write an equation describing the upward motion of the projectile.
***No air resistance.
***Let y represent altitude of the projectile (feet).
***let t represent time after firing in sec.
~~ 5200=-16t^2+340t+4500~~ IS THAT EQUATION CORRECT?
2. When, on the way up, might the projectile intersect the Red Baron? (THIS IS WHERE IM STUCK).

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