All things physics! Vodcasts for physics lectures and homework review.
PHYSICS: Great job with some of the more advanced momentum and energy problems! Here’s a look at the student in the middle of a frozen pond, bird on the wire, car crash with coefficient of friction, and the billiard balls.
Ready for the test? Take another look at some of the concepts!
PHYSICS: Great job on the problems so far!! Here’s our look how kinetic and potential energy get involved – dart in the block of wood and the bird on the swing. This cute little bird isn’t on a swing, but he is one I came beak to nose with on a mission trip to Costa Rica!
What about even more practical applications? Hmmmm…..
PHYSICS: Collisions – they’re all around us and they all obey the law of conservation of momentum. Here’s more specific information about the proper way to differentiate and name them.
Great job with the conceptual review and setting up the problems! As you practice tonight, be sure and check for connections between the conservation of momentum and the conservation of energy. 🙂
PHYSICS: Great job playing around with the law of conservation of momentum! Now go play with the problems! 🙂
PHYSICS So that’s why you need good running shoes! Here’s our discussion of momentum and the impulse-momentum theorem. Did you understand the relationship between force and time? Let’s see if you can put it to practice tomorrow!
Happy New Year!! Aren’t you glad that God gives us a chance to start all over again?
We are going to have an awesome 2nd semester!! I’m praying that God will use this semester to help get you ready for the incredibly wonderful things in has for you in the future!! And more than that, I pray that this year you’ll grow more than any other in your walk with our Lord Jesus. I pray that you’ll be determined to follow Him, no matter if you have to walk by yourself.
I can promise you – Jesus will never forsake you!
Happy New Year!!
“And they that know thy name will put their trust in thee: for thou, LORD, hast not forsaken them that seek thee.” Psalm 9:10
….”I have decided to follow Jesus. No turning back, no turning back. Though none go with me, I still will follow. No turning back, no turning back.” John Clark
PHYSICS: God bless you as you study for your test!! Here’s our conceptual review from today and a couple of potential energy problem – the bow and arrow problem and the pogo stick
Photo by Matt Bowden on Unsplash
PHYSICS: Great job with the power lab today. All I’ve got to say is how in the world?!? You’re also doing a great job with these problems! Here’s our look at #19 from the Chapter 5 Worksheet 2. Would have been helpful, I think, if I had remembered that they didn’t tell you it was at constant velocity.
God bless you as you continue to prepare for the test! I’m praying for you!!!
Photo by Joanna Kosinska on Unsplash
PHYSICS: So how many horsepower do you have? Hmmmm…..
Here’s the super short lecture from today on power – beginning with #46 from last night’s homework, and then a quick look at the power lab. Now go forth and conquer the power problems!
Need answers? Here are the Chapter 5 Review Worksheet 2 Answers:
3.) 1090 J
4.) 1350 J
5.) 79%
6.) 917 W
8.) 9.57 kW
12.) 420 N
14.) 1300 J
18a.) -125 N
18b.) -2190 J
18c.) 0.360
19.) 4380 J
PHYSICS: Pretty nifty are simple machines! Did you remember all this from your physical science days? I don’t think you’ll have any trouble with efficiency and mechanical advantage problems. Give them a whirl and let me know!
Photo by Artem Beliaikin on Unsplash
