The AP Physics C Mechanics Thread

<p>2 for mechanics was just ■■■■■■■■…</p>

<p>All I have to say to #2 Mechanics FR is … what the !@#$?</p>

<p>UGH. TOTAL OWNAGE. FAIL (But apparently so did everyone else)</p>

<p>Predict 20-25 right on MC, 5-7 wrong, 8 blank due to not remembering formulaic stuff.</p>

<p>FRQ 1: 15
FRQ 2: gahhhhhhh
FRQ 3: 7? i hope.</p>

<p>hoping for a 4.</p>

<p>Are the curves really THAT generous? For mechanics, this just means I have to get like 25 right on the MC and two FRQ mostly right and put some work down on the third FRQ to get a 5.</p>

<p>jesus o left blank #2 FR parts a and b
absolutely ridiculous</p>

<p>MC: answered 26/35 but was sure on everything I answered, I never guessed
FRQ 1-Easy!!!
FRQ 2-FAILLLLL!!!
FRQ 3-Moderate, more on the easier side</p>

<p>Maybe a mid range to strong 4?? <em>prays</em></p>

<p>Overall the test wasn’t too bad, easier than most of the stuff we did in class at least</p>

<p>Yea, curve for physics C is very good in general, and seeing as tons of people totally bombed # 2, and did fairly okay on the other two, the curve’s probably gonna be even better this time.</p>

<p>The people grading question number two are going to have an easy time of it. (With so many people leaving it blank or practically so)</p>

<p>Um. I found #2 in my notes. I’ll post it as soon as i’m allowed. it’s pretty interesting.</p>

<p>The whole small angle thing:</p>

<p>you basically say that sin theta approaches theta as theta is smaller. </p>

<p>That stems from the lim sin x / x (x > 0) = 1 thing/ squeeze theorem.</p>

<p>There was also some pretty nifty calc involved. =/.
But rejoice in that the curve will be really good, haha.</p>

<p>Did you guys not do parts 3 and 4 of #2? They were really easy / BSable.
But anyways, I’ll say more when I’m allowed</p>

<p>Yes I agree when I saw #2 I knew that nobody would get it - but my teacher made a huge review sheet for us in mechanics, and #2 was on the last page.</p>

<p>So I studied it the night before and I knew it well - parts c and d were somewhat random and easily bsable</p>

<p>So I left out 2 in the multiple choice and only guessed a couple- I thought it was kinda different than normal so I didn’t do that well in it</p>

<p>I probably got like 12 on the first one because I might have gotten the graphs wrong or messed up a negative somewhere</p>

<p>if C and D are right i got 15 on #2 :)</p>

<p>on #3 im really not sure it depends on my answer with greater, less, or equal to
I didn’t really get the part before that - so maybe an 11?</p>

<p>well that adds up to about a 38 so if I didn’t bomb the multiple choice I’m looking at a 5 :)</p>

<p>Someone said 2 will be easy to grade, but it will probably be very hard in actuality. Anyone who left an entire problem blank is an idiot; rather, most people who didn’t know how to do it (like me!) probably just tried to make some BS answer with a lot of work. Thus, the graders will see a ton of different solutions, most of them wrong, and will be forced to calculate how much partial credit to give. Because I’ve heard that if you have the right answer, you pretty much get full credit as long as you have work down because the graders just skim your work. So, on very easy problems they just have to check answers and occasionally look to check for work on wrong answers, but for this problem they will have to look through practically everything.</p>

<p>10 char, bump</p>

<p>do u guys know what the curve could be? number 2 was ridiculous. i hadno idea. i just wrote a random equation for Torque and thats bout it. and number 2b i just copied an equation i knew for T of a physical pendulum. But, u think that if i omitted 4, answer 31 MC, and prolly mmissed 2 or 3 MC. Then got 1 and 3 on the FRQ, could i be looking at a 5? i bet the cruve will be like 46-90 a 5.</p>

<p>i was expecting 5 on mech and 4 on e&m before the test, but now i am expecting 4 on mech and 5 on e&m…mech#2 was outrageous and e&m was sooo much easier than i expected</p>

<p>Do you guys think that the curve for mechanics might be 45/90 or even lower for a 5? Compared to the free response from last year, this year’s was a lot more abstract, and last year’s curve seemed to be pretty generous too…so hopefully…</p>

<p>And did you guys think the multiple choice was not that bad, but just took a long time? I only had time to answer about 27, of which about 25 I knew for sure, and had to leave the rest blank…or maybe I’m just not that good haha</p>

<p>i think 45/90 is a bit too far
maybe 50/90 if we are lucky</p>

<p>E&M was like 48/90 back in 2004. It’s always possible I suppose</p>

<p>E/M is always 7ish points lower than mechanics though. Even 50 would be a HUGE stretch.</p>

<p>i agree with tomhuu…
45/90 is WAY too low.
50/90 would be awesome, but that might even still be too low.
My guess from before still stand at 52-53/90 for a 5. I’m pretty sure I got about 60, but I guess one never knows until the results come in July :-/</p>