We've already learned about the equations that DEFINE average velocity and average acceleration. Today, we'll start to use our mathematical definitions to solve problems in "It's Your Lucky Day" Packet (aka Tesla Problem).
Homework: Make sure you've completed #1-3 on "It's Your Lucky Day" Packet. See my solutions below. (The solutions below are for an older problem, so the numbers are different, but the solutions are the same except for the numbers.) ❗ Assessment on all of graphical analysis of motion NEXT CLASS - Tuesday, September 15th.
Here are the goals for work in this packet:
Learn how to manipulate the definitions of average velocity and average acceleration in order to derive other kinematics equations.
Learn the expectations for communicating solutions to kinematics problems:
diagram/graph
sign convention
listing of knowns & unknowns
stating equation
using algebra to find an expression for the unknown in terms of all the knowns
solving the problem with numbers
In class, we'll try to do #1-3.
Handouts: "It's Your Lucky Day" Packet
Homework: If you have not already, complete #1-3 in the "It's Your Lucky Day" Packet.
Check your Solution to #2 below.
Check your Solution to #3 below.
❗ Assessment on all of graphical analysis of motion TODAY
Today, after the quiz we'll get back to discussing findings from #1-3 on "It's Your Lucky Day" Packet. We'll take a look at some new "equations of motion with constant acceleration" (aka kinematic equations). We'll fill out a chart Equations of Motion Graphic Organizer which will aid you in finding the most efficient equation to use.
Then, we'll do an activity to practice equation selection: Which Equation Should I Use. During this activity, you'll see a problem. Write down the knowns and unknowns, and select the best equation to use to solve the problem.
Then, we'll talk about how to do #4 from "It's Your Lucky Day" Packet, and learn how to use equations of motion to solve problems with more than one object.
Remember, when writing out your solutions, be sure to practice including all the components of problem solving reviewed in class as this will help solidify good habits for the assessment next week:
Draw a picture or diagram or graph.
Pick a sign convention.
List your knowns and unknowns.
Write the formula you'll be using.
Rearrange the formula with algebra so that your unknown is on the left side of the equals and all the knowns are on the right. STAY IN VARIABLES!
Plug in numbers and box your answer.
Handout: Equations of Motion Graphic Organizer
Homework: Finish Which Equation Should I Use if you have not already, due at 10pm tonight. Take your freefall video and post to ✏️ Google Classroom by Thursday night at 10pm!
Recommended Additional Practice Problems: Ch 2 #3, 4, 8, 18, 24, 19, 25, 20, 22, 36 (answer in Mastering Physics so you can see if you're right in preparation for your quiz next week)
Today, you will have time to do some additional problem solving in preparation for the unit assessment.
Homework: Continue to solve the problems that were distributed today. Today is one of the very few days that you'll be allowed to bring your classroom journal home. Please make sure to bring it back to class tomorrow. Take your freefall video and post to ✏️ Google Classroom by Thursday night at 10pm! ❗ Assessment on using kinematics equations on Tuesday, September 22nd.