<p>@jimbeii: I put 2m as well. But why is it 2m? Please explain.</p>
<p>yes 2m, because the string is only pulling the 2m thing.</p>
<p>acceleration is a
so acceleration of block 2 is also a
you have F = ma (there is only 1 force on block 2, the string, if you dont count gravity and normal force)
m is 2m, as stated in the question, and a is a
so F = 2ma</p>
<p>it looked like this:</p>
<p>–[3m]–[2m]
the tension on 2m block only depends on the mass and acceleration of the 2m block</p>
<p>and i’m guessing then that it said 1 m/s^2 in the problem for acceleration although I don’t remember, except that I put 2m as the answer</p>
<p>^does that mean acceleration for a pendulum is greatest on the bottom? because f = ma, so if force of tension is greatest, acceleration is as well?</p>
<p>and for the graphs one, was it none of the above?</p>
<p>did we establish answers for one of the matching sections at the beginning where it gave sets of numbers (one of the choices was 3,3,3,3,3,3,3 or 1,4,9,16 etc.)?</p>
<p>I got the acceleration one, but I remember struggling for some of the others (i forget the specifics).</p>
<p>^What was the accleration one? 1,4,9,16?</p>
<p>hey guys, does anyone know the answer to the question with the lens…and the water…and index of refractions…etc…?</p>
<p>yeah, that’s what i put at least.</p>
<p>I got 1,4,9,16… for the first and last one (displacement vs time with constant acceleration and kinetic energy of a block sliding down an incline).</p>
<p>^me tooo!
what about you, Opus?</p>
<p>okay good, i remember putting that for the incline too…does anybody remember what the second one was? my mind’s quitting on me it seems lol</p>
<p>It was the velocity of an object as a constant force was applied in the opposite direction of the velocity. It was the descending one.</p>
<p>Oh that’s right. I honestly forget what I put for that one. Maybe I’ll get lucky</p>
<p>I’m kinda nervous. I omitted 8, I think, and I’ve already counted 3 wrong answers. At this point I’m crossing my fingers for a 750+.</p>
<p>^Yeah same
Omitted 5, 4-5 wrong
:(</p>
<p>But I think since we’re discussing the harder ones, that might be all</p>
<p>-10 to 11 raw is usually an 800, so maybe we’ll be ok :)</p>
<p>Also, for the tables of values, was there only one set that was descending?</p>
<p>I think so. There was a straight ascending, straight descending, constant, and exponential ascending. </p>
<p>And I’m afraid I may have made more mistakes. I’m just hoping for the best.</p>
<p>Yeah, I think I screwed myself over on this one. I didn’t even get to looking at 6, had 15 seconds left, panicked, and impulsively filled in all C’s for the remaining 6 instead of omitting them. </p>
<p>I’m an idiot - looking back, out of all of those only, what, 1 of them is going to be correct? lol</p>
<p>Yeah, that probably wasn’t a smart move. I’m a senior, and this is the only time I’ve taken subject tests. Today was an all-or-nothing ordeal.</p>
<p>Yeah, I’m a senior as well. I took the physics test last month for the first time without any preparation and didn’t do too well, so I studied up for this one. It’s the last month for me to take them as well, so I hope I didn’t screw it up too bad.</p>