Imagine a diver jumping off a spring board that is 10 feet above the water. The board throws the diver up with an upward velocity of 9 feet per second. That means that if there were no gravity, the diver would keep going up at the rate of 9 feet every second. Fortunately for the diver, there is gravity. Eventually, gravity over comes the force of the diving board and the the diver begins to come down. So over all, the diver is thrown into the air fairly quickly, he slows down until he stops, then begins to come back down (slowly at first, then faster and faster until he hits the water). The height of any object like the diver that is projected into the air can be modeled with the following function: h(t) = -16t^2 + v*t + m In this function: h(t) is the height of the object t seconds after it was thrown into the air. t is the number of seconds after the object was thrown in the air. v is the initial upward velocity (for the diver this was 9 ft per second). m is the initial height of the object (for the diver this is 10 feet). Now for the questions: What does the v*t represent in the case of the diver? What do you think the -16t^2 represents in the case of the diver? How high will the diver be 1 second after he leaves the board (find h(1))? What will h(t) be when the diver hits the water? How long will it take the diver to hit the water (Hint: Put 0 in for h(t), then solve for t)?
Imagine a diver jumping off a spring board that is 10 feet above the water. The board throws the diver up with an upward velocity of 9 feet per second. That means that if there were no gravity, the diver would keep going up at the rate of 9 feet every second. Fortunately for the diver, there is gravity. Eventually, gravity over comes the force of the diving board and the the diver begins to come down. So over all, the diver is thrown into the air fairly quickly, he slows down until he stops, then begins to come back down (slowly at first, then faster and faster until he hits the water). The height of any object like the diver that is projected into the air can be modeled with the following function: h(t) = -16t^2 + v*t + m In this function: h(t) is the height of the object t seconds after it was thrown into the air. t is the number of seconds after the object was thrown in the air. v is the initial upward velocity (for the diver this was 9 ft per second). m is the initial height of the object (for the diver this is 10 feet). Now for the questions: What does the v*t represent in the case of the diver? What do you think the -16t^2 represents in the case of the diver? How high will the diver be 1 second after he leaves the board (find h(1))? What will h(t) be when the diver hits the water? How long will it take the diver to hit the water (Hint: Put 0 in for h(t), then solve for t)?
Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Transcribed Image Text:Imagine a diver jumping off a spring board that is 10 feet above the water. The board throws the diver up with an upward velocity of 9 feet per second. That means that if there
were no gravity, the diver would keep going up at the rate of 9 feet every second. Fortunately for the diver, there is gravity. Eventually, gravity over comes the force of the diving
board and the the diver begins to come down. So over all, the diver is thrown into the air fairly quickly, he slows down until he stops, then begins to come back down (slowly at
first, then faster and faster until he hits the water).
The height of any object like the diver that is projected into the air can be modeled with the following function:
h(t) = -16t^2 + v*t + m
In this function:
h(t) is the height of the object t seconds after it was thrown into the air.
t is the number of seconds after the object was thrown in the air.
v is the initial upward velocity (for the diver this was 9 ft per second).
m is the initial height of the object (for the diver this is 10 feet).
Now for the questions:
What does the v*t represent in the case of the diver?
What do you think the -16t^2 represents in the case of the diver?
How high will the diver be 1 second after he leaves the board (find h(1))?
What will h(t) be when the diver hits the water?
How long will it take the diver to hit the water (Hint: Put 0 in for h(t), then solve for t)?
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