Physics 10-1-13 Test on Chapter 3, 2-D Motion

PHYSICS: So you ready for that test tomorrow? Below – first the overview we did in class with a few of the worksheet problems, then below that the help session from this morning.

Don’t forget what you should do to start – Draw a picture, write what you know, resolve the resultant velocity into vertical and horizontal if you need to, and find formulas that fit (because it will hardly ever be solved with just one) and go for it!!

If you are talking angular projectiles, the resultant velocity is actually made up of two things – horizontal velocity and vertical velocity. The horizontal velocity never changes, the vertical velocity has a different direction going up and coming down, but it has the same speed at equal levels. If you’re talking horizontal projectiles, the resultant velocity is the same as the horizontal velocity of the gun – or whatever, because that’s the only kind of initial velocity it has!

Relative motion is even easier – just use the Pythagorean theorem and tangent, and use horizontal to find horizontal and vertical to find vertical. Good bless you! I’ll be praying for you!!

October01 1257 p5 2013 from Tammy Skinner on Vimeo.

flickr photo by f-l-e-x


October01 0804 p5 Help Session 2013 from Tammy Skinner on Vimeo.

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17 thoughts on “Physics 10-1-13 Test on Chapter 3, 2-D Motion

  1. The test was very interesting. Hopefully, we won’t have to calculate the negative acceleration of our averages. Looking back I realized what I did wrong on a few of them. Live and Learn.

    • Nicolas – Anything saved to Google Drive is due by midnight of the day that it is due. So Friday, midnight 🙂

    • Michael – You were supposed to take pics, but I might sell you mine! Just kidding – you can have any of the ones I took. 🙂

  2. For his invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse. Romans 1:20 ESV This verse perfectly coincides with what you were saying in class that The Lord is seen in everything around us!

  3. I feel so much better about that test we took Wednesday! I definitely feel more confident about rearranging formulas now that I’ve had more practice.

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