Lesson 301 of 1524
8.1 Finding Unknown Inputs
A mechanical device is used to launch a potato vertically into the air.
Practice this chapterA mechanical device is used to launch a potato vertically into the air. The potato is launched from a platform 20 feet above the ground, with an initial vertical velocity of 92 feet per second
The function h ( t ) = - 16 t 2 + 92 t + 20 models the height of the potato over the ground, in feet, t seconds after launch You then used the graph to describe the situation
potato — launched from a platform 20 feet above the ground, with an initial vertical velocity of 92 feet per second. mechanical device — used to launch a potato vertically into the air.
Be able to explain the meaning of a solution to an equation in terms of a situation; write a quadratic equation that represents a situation.
Worked example
What does “potato” mean in 8.1 Finding Unknown Inputs?
- 1Use the wording this chapter gives for potato.
- 2The book says: launched from a platform 20 feet above the ground, with an initial vertical velocity of 92 feet per second.
- 3Do not use the meaning of mechanical device. That term means used to launch a potato vertically into the air.
Result: launched from a platform 20 feet above the ground, with an initial vertical velocity of 92 feet per second
Why. That is the meaning this chapter gives for potato.
Do not swap potato and mechanical device. potato means launched from a platform 20 feet above the ground, with an initial vertical velocity of 92 feet per second. mechanical device means used to launch a potato vertically into the air.
Practice margin
This chapter
A fresh set from this chapter only. Choose 10 or 20. Multiple choice and fill-in, with no repeat inside the set.