Posted by **lindy** on Monday, November 30, 2009 at 5:21pm.

A red ball and a green ball are simultaneously tossed into the air. The red ball is given an initial velocity of 96 feet per second, and its height, t seconds after it is tossed is (-16t^2 + 96t) feet. The green ball is given an initial velocity of 80 feet per second, and its height, t seconds after it is tossed is (-16t^2 +80t) feet.

1: Write the algebraic expression in simplest form that represents the difference in heights between the two balls at any time, t.

2: How much higher is the red ball after 2 seconds?

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