2019 Cary High School Physics

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Hi foks, Today we worked with the concepts of gravity.  We explored a variety of thought problems to see if we could figure out what would happen in different situations.  We found out that even though gravity is pretty straight forward, we still have quite a few misconceptions about how it works. For homework this week read Chapter 12 and Chapter 13 in the book starting on page 169. Do review questions 1 - 14 on page 180 and 1 - 15 on page 196.   Answers are below for you to check yourselves. Best, Jim Mueller (919) 907-3217

https://youtu.be/qHc_JVvMUvs

Hi folks, This week we finished off our look at graphing motion.  This will be on upcoming quizzes but we are going to walk away from doing more with it in class at this point.  We also took a small step into the concept of gravity.  We will be doing more with this next week but this week we discussed a bit of the math behind calculating acceleration due to gravity.   For homework this week: Read pages 17 - 24 Do questions 2 - 4 on page 27 Also, calculate the answers to the following questions using the formulas we used today.  Also, we are in Newtonia so don't worry about air resistance.  :)  Answers to both assignments are below.   1.  Using the first dive on this video https://youtu.be/ttetLjQ4du8?t=81 a.  If the platform is 30 m high, how long does it take him to hit the water? b.  How fast is he going when he hits the water?  (Use the time you found from the first question) 2. Use the first drop from this video https://you...

Part 1 Part 2

Hi folks, Today we spent a good amount of time looking at how to graph linear motion. For homework this week I'd like you to take a look at the following websites and have some fun with the interactives.  This seems to work better on some browsers than others.  I've had luck doing these with Firefox but hopefully you won't have any problems. For this link, get at least 8 stars.  These take some time to get used to but with some trial and error you should be able to get the hang of them.  I found the Speed v. Time Graphs to be a bit easier than the Distance vs. Time ones. When you are done take a picture or a screen shot to show me that you've done the assignment.    Graphs and Ramps Interactive For this link, do all the "Apprentice Level" and all the "Master Level" problems.  Again, take a screen shot or a picture when you're done.   That Motion Concept Builder Also show me graphs of the following scenarios.  I'm looking fo...

https://youtu.be/jy_Yb2CzIuI

Hi folks, So today we dove a bit deeper into some of the tougher math of acceleration.  We also did a lab where we found the acceleration of a toy car as it traveled about 25 feet.   Next week we will do more with this data so please keep your data handy from this week For homework this week 2 assignments. It sounds like we could use some more practice with some of these acceleration problems so please do the following in this email. Also, do the Think and Explain questions on page 27 of your text.  Remember for the questions concerning gravity that gravity has a constant acceleration of 10m/s/s. Answers will follow this email.  Imagine that you have a ramp that is 10 feet long If the ball rolled down the ramp in 5 seconds, what is the average speed of the ball on that ramp? 2.  What is the acceleration of the ball on this ramp? 3.  As the ball is traveling down the ramp, where does it reach the average speed? 4.  What speed will the ball have a...

Hi folks, We are going to be doing some stuff outside again today so please come dressed for the weather.  It's supposed to be in the high 60's today so tank tops and shorts may not be your best option.  :) See you all soon. Best, Jim Mueller (919) 907-3217

Part 1 Part 2

Hi folks, Today we took it up a notch and began working with the concept of acceleration.  We will get deeper into this next week. Just a warning, there will be a quiz next week so be sure to spend time with the velocity and acceleration problems and the definitions we've been working on the past few weeks. For homework this week please do the following 2 assignments.   Do questions 1 - 8 on page 26.  I'll send answers in a following email. Also use the enclosed data table to answer the following questions. 1.  If the ramp is 6 feet long, what is the average velocity of the low slope, the medium slope and the high slope? 2.  What is the acceleration of the  low slope, the medium slope and the high slope? 3.  For the high slope, as the ball is traveling down the ramp, where does it reach the average velocity? 4.  What speed will the ball have at the bottom of the high slope? 5.  For the high slope, imagine that the ramp was longer and the ball...

Hi folks, Each day after class, I will be sending and email with a short description of what we did in class as well as the homework that is due next week. This week we spent some time going over class expectations and the grading procedures. We also spent a bit of time discussing why science is necessary and how it is done. Homework for next week is: Read pages 1 - 7 In the Conceptual Physics text Do Review Questions 1 - 10 on page 8 Do Think and Explain questions 1 - 3 on page 8 

Hi folks, Today we really got rolling on our first unit of motion by taking the time on this beautiful day to try out our skills at finding velocities.  The students were challenged to find the velocities of a dart shot out of a Nerf dart gun.  It was a bit more challenging than folks were expecting but over time we got some pretty good data sets. For homework this week do the following 3 assignments. 1.  Do the enclosed worksheet (answers are below). 2.  Answer the questions in the email 3. Answer the question based on today's lab. ALSO answer the following questions 1.  What is the definition of precision? 2.  What is the definition of accuracy? 3.  If someone tells you they travelled 20 miles in 2 hours which of the following can you figure out?  Distance,  Time,   Average Speed, Instantaneous speed, Velocity, Displacement  4.  If someone tells you they ran 5 miles South in 5 mi...