Ballooning

**fred** · March 9th, 2009, 03:48 PM

At a hot-air balloon festival, you throw a weighted markter straight down from an altitude of 250 feet toward a bull's eye below. The intial velocity of the marker when it leaves your hand is 28 feet per second. Find how long it will take the marker to hit the target by solving the equation -16x2 - 28x + 250 = 0

**skeeter** · March 9th, 2009, 06:18 PM

Originally Posted by fred

At a hot-air balloon festival, you throw a weighted markter straight down from an altitude of 250 feet toward a bull's eye below. The intial velocity of the marker when it leaves your hand is 28 feet per second. Find how long it will take the marker to hit the target by solving the equation -16x^2 - 28x + 250 = 0

quadratic formula ...

$a = -16$

$b = -28$

$c = 250$

$x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}$

Math Help Forum: Ballooning

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