Physics 9-1-11 Acceleration, Pt. 2

PHYSICS: Hey guys, 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 might 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 next Tuesday morning. Somebody better text me!

12 thoughts on “Physics 9-1-11 Acceleration, Pt. 2”

1. Matthew D P5 says:

Are we going to work these problems tomorrow?

2. Cory A P5 says:

Since there are times when we have to find the square root of a number in some of the acceleration formulas does that mean they may have a positive and negative answer and how do you know which answer to use?

3. Zach C. P5 says:

Will the problems on the test be as complicated as the ones on the homework? Also, will this test be over section 1 and 2 or just 2?

• Ms. Skinner says:

Zach – The test will be on this entire chapter – sections 1, 2, and 3!

4. Jakin D P5 says:

Should we go ahead and try the homework for tomorrow night since we won’t be here for class tomorrow?

5. Andrew F P5 says:

Are we going to continue with the braking distance lab on Thursday, or do we only use the information that we were able to compile today?

• Ms. Skinner says:

Andrew – You’ll use the data you have to write your report. Did you need to gather more data?

6. Megan G P5 says:

I am beginning to feel a little more confident about these formulas. However, I am absolutley terrible at problems like tortoise and the hare, and those stinkin cockroaches. Help! Am I supposed to set their distances equal, then solve, or use a totally different formula?!

• Ms. Skinner says:

Megan – On the cockroaches (and may I just say, Yuck!), since they had a different acceleration, they would have run different distances, right? I’d start with the fact that since the roaches were 60 cm apart, at any point during their “run”, they’ll always be 60 cm apart. So….. d1 + d2 = 60 cm, and then start from there by filling in how you can find d for both of them. Also, don’t forget they both ran the same amount of time.

7. Kamren J P5 says:

Ms. Skinner, thank you so much for helping me so long on tuesday morning! i am beginning to understand the acceleration problems much much better now… we may need to backtrack though with those velocity problems…

• Ms. Skinner says:

Kamren – I’m really proud of the progress you are making on these!

8. Courtney H P5 says:

I feel like I am understanding the velocity problems so much better than before! Thanks for letting me redo the homework problems over the weekend.