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2 articles trouvés pour ce sujet.
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An arrow is shot straight up in the air |
2012-12-06 |
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heather pose la question :
The skywalk is a glass bottomed platform that hangs over the edge of the Grand Canyon and is suspended 4000 feet above the floor of the canyon. If a tourist shot an arrow straight up in the air from the observation platform, the arrow's height could be modeled by H(t) =-16^2 + 240 + 4000 where H(t) is the height of the arrow above the canyon floor in feet t seconds after being shot, t>0.
(a) Find H(5) and explain its meaning
Penny Nom lui répond. |
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Shooting an arrow over a wall |
2007-12-11 |
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Amy pose la question :
The path of a large arrow fired from a non
torsion catapult can be modeled by y=-0.0044x^2 + 1.68x, where x is the distance the
arrow travelled (in yards) and y is the height of the arrow (in yards). Given the height of
a castle wall, find the safest distance from the wall to launch an arrow over a 120 yard-high wall.
Victoria West and Stephen La Rocque lui répond. |
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