Homework Help: math

Posted by christian on Saturday, December 11, 2010 at 7:14pm.

projectiles what is the formula?
Question A firework company is designing fireworks so that they can explode above a certain height. the fireworks are fired from the ground at an initial velocity of 160 ft per sec, what is the range of times for the firework to explode so that it is at least 350 feet in the air

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