weaks6_8

Lo0oS 2+2 MaTeMaNiaCoS Period 6 Group 8 **Who's in your group?**

Follow the directions on the Vertical Motion page, to complete each of the sections below.

 * __The Word Problem__:** How would you solve for time in the problem your group was assigned? Prepare the equation to solve for time, defining the variables and supporting your choice in equation.

 9) A batter hits a pitched baseball when it is 3 feet off the ground. After it is hit, it moves with an initial upward velocity of 80 feet per second. If no one on the opposing team catches it, how long until it hits the ground? We want to use this equation because the object is being thrown, not dropped.

= initial height; in this problem, it's where the ball is hit from. h = height at any given time, in this problem it's when the ball hits the ground. t = time; in this problem, time is how long it takes to hit the ground. v = velocity; in this problem it's how fast the ball goes.



1. a = -16 b = 80 c = 3 2. The effect that a can have on the graph is that if a is positive (+) the parabola will open up and if its negative (-) it will open down. The magnitude of the of a whole # or fraction will effect the parabola by how narrow or wide it is. 3. C effects the graph because it translates the graph up or down. **What will your graph look like? Where is the discriminant? Section 2 is late.** = = this is how you find the axis of symmetry axis of symmetry is 2.5, which mans that the axis of symmetry is on 2.5 on the x-axis
 * __The Parabola:__** Use what you know about parabolas to predict the shape of the graph. What will it look like, and how do you know?
 * __The Math__:** Pretend you are the teacher, and this section is your lesson. Post the calculations required to graph the equation and find the solution, and show all the steps to doing so. Teach your audience all the important parts of the graph and explain what they mean for the problem you were given.

You have to plug in the axis of symmetry to the original equation to find the other quardinate to the vertex **Where is your graph with labels? Where is the QF to find the roots? Section 3 is late.**


 * __The Solution and The Meaning__:** What do the different parts of the graph mean? What does the solution mean?


 * __Reflection__:** How did it feel to do the work and pretend to be the teacher? Do you think you understand the material more, now? Why or why not?