Quadratic Word Problems.notebook
May 04, 2012
Quadratic Word Problems
1. The height of an acorn falling out of a tree is h = ­16t2 + 25 where h is height in feet and t is time in seconds. Determine how long it takes the acorn to reach the ground.
Mar 14­9:53 PM
2. An architect is designing a building with a right triangular footprint. The hypotenuse of the triangle is 80 feet longer than one leg of the triangle and 40 feet longer than the other leg. Use the Pythagorean Theorem to find the dimensions of the footprint of the building.
Mar 14­10:21 PM
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Quadratic Word Problems.notebook
May 04, 2012
3. Robert threw a rock off a bridge into the river. The distance from the rock to the river is modeled by the equation h = ­16t2 ­ 16t + 60, where h is the height in feet and t is the time in seconds. Find how long it took the rock to enter the water.
Mar 14­10:21 PM
4. In the past, professional baseball was played at the Astrodome. The Astrodome has a maximum height of 63.4 m. The height of a baseball t seconds after it is hit straight up in the air with a velocity of 45 ft/sec is given by h = ­9.8t2 + 45t + 1. Will a baseball hit straight up with this velocity hit the roof of the Astrodome?
Mar 14­10:21 PM
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