PHYSICS – Great job today!! You are on your way to conquering the component method of vector addition. So which do you like better? Give yourself a chance to get used to separating everything into x and y and it will click, I promise!
PHYSICS – Hey guys, here’s the homework from vectors and a tiny bit of graphical vector addition practice. Is it starting to click?
A couple of super important things – GRAPH PAPER(!) and sketch it out before you start so you’ll know where to place the first vector with out running off the page. Also, graphical addition is adding vectors head to tail – then the resultant is found from the tail of the first vector to the head of the last vector. Get the direction by measuring from the tail of the resultant.
PHYSICS – Hey guys, great job today on the intro to vectors – graphical vector addition, resultants, and the like. Have you done anything like this before? We’ll spend tomorrow practicing adding vectors graphically. Great start today! Don’t forget your protractor and graph paper!
PHYSICS: Here are the problems from the help session this morning – the park ranger and the deer, and the colliding cockroaches. Yuck!!
But great work on the problems!!
Photo Credit: Andre Maritz | Dreamstime
PHYSICS: Test tomorrow! You can do this!! First, since I didn’t have the mic on for the conceptual review today, I found an old overview of some of the conceptual stuff that I thought might be helpful. At the end of it, there’s a look at some of the free fall problems – #36, 37, 40, and a start on 47.
Below that is Payne’s rocket problem – #38, and a complete look at #47, the mountain climber and the single splash (very key part!).
Are you becoming more comfortable with working problems? When selecting formulas, it’s always a good idea to ask yourself “Why?”. Why can you use this formula? Why is it legit? Why is it the best one? Is there a better route to the solution? And then, continue to practice them over and over til it starts to become second nature!
God bless you as you prepare for the test! I’m praying for you!!!
PHYSICS: Great job thinking through the “problems” in a different way today! Here’s a look at throwing rocks and the first of the rocket problems.
PHYSICS – So how about a little free fall? Great discussion on acceleration due to gravity today!
So what’s your reaction time? Knowing what you now know, is there a way for you to figure that out?
PHYSICS: Watch out for bunnies on ski slopes!! Here’s the last of the acceleration formulas. Good job with the derivations! You’re doing really well with them – stay with it! Carefully examine what you know with the formulas you have that might fit. And if they don’t, examine what you do know that could lead you to what you need to know. You know? 🙂
Tonight’s problems may be a little challenging, but you can do it!! Do you need some extra practice rearranging the formulas, or just working the problems? Help session?
PHYSICS: Thanks Gigi and Joseph for the awesome illustration of constant acceleration! 😉
Also – love how you began deriving formulas! I think you’ll come to find these are a ton better than some of the velocity problems you did. List what you are given and what you’re looking for – don’t forget things like “starts from rest” and “came to a stop.” Easy peazy! Okay, maybe not that easy! 😉
PHYSICS: Great work on the tortoise and the hare problem! And great intro to acceleration!
How are you doing on the “tough” problems? I’ve said it before, but remember a few things: You weren’t born knowing how to do these – give yourself a little time. On the really good ones, just one formula won’t work – begin with writing what your know. These are some of the hardest problems we’ll work in physics – not because the formulas are hard, but because knowing how to reason through them is so challenging.
You are doing a great job! Some good advice – go work them again! I promise, it will be good for you. Remember, don’t open the solutions you wrote in your notes! Try them without it!! If you have to, peek, but then don’t stop until you can work the entire problem through without looking!