# Physics 1-11-18 Collisions Problems with Energy & More!

PHYSICS: Great job on the problems so far!! Here’s the preview from today – dart in the block of wood, bird on the swing, car crash, and a start on the billiard balls. 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!

On to a more practical application tomorrow. Speaking of which, any questions? Light bulb? Questions??

# Physics 12-1-17 Problems Review 2 – Machines, Work, Consv. of Energy . . .

PHYSICS: I wish I could watch you problem solving together! Here’s a head start (if you need it!) –

The first vodcast below is the review of the problems #46 – crate pulled up the incline from the machines homework and #47 – ski acrobat from chapter 5. Below that are the problems #22 – circus monkey on the incline, #21 – diver steps off a diving board, and #46 – a skier is pulled up a slope.

flickr photo by William Hall

…and from today’s class:

# Physics 11-28-17 The Work Energy Theorem & Conservation of Energy

PHYSICS: See?! I wasn’t kidding about the balancing rocks movement!

Great job today on making connections between work and energy! I think you’ll like using the work-energy theorem, it’ll save you some time and a couple of steps. Don’t forget about friction!

# Physics 1-11-12 Collision Problems Review

PHYSICS – Don’t you love these high speed pics! Here’s the review of the problems from Wednesday. You are doing a great job on the problems – and you helped me figure something out too! I was really proud of the way you were connecting the conservation of momentum with the conservation of energy.

How are you doing with applying the concepts? Let’s tackle that one last time tomorrow before the test. And help session Friday morning, 7:15ish A.M.

# Physics 11-29-11 Chapter 5 Review Worksheet Problems

PHYSICS – Hey guys, it was good to get back to exercising the old gray matter today! Here are some of the problems from the first chapter 5 review worksheet: 3, 4, 5, 2, and 10. Watch out for 2 and 10! You did a great job on them with me in class, but make double sure you can work them also by yourself. That’s homework tonight, re-work by yourself the ones you didn’t get before. And then do it again til you make sure you have it! π

I’ve never seen Old Faithful in person, have you? So we calculated the velocity of the water coming from the bottom – reckon how much power that would be? Power? Let’s talk about that tomorrow!

# Chemistry 8-22-11 Chemical & Physical Changes

CHEMISTRY – Happy Homecoming! How’d you like playing with precipitates? Here’s the lecture on chemical and physical changes, and also on the laws of conservation of mass and energy. Good job on tracing the energy transformations from one form to another. Make sure you can apply all this on the test (and in life!). π