<p>Yes! the speed of light is the fastest measured, due to relativity… that’s what i said!</p>
<p>the question that said the findings of something were based on what, snells law was an answer, but i out relativity.</p>
<p>@skepticidal:
I did Physics > Chem > Math in the order I THOUGHT I would do best in, increasing (i.e. Physics worst, Math best). I did super well on all the official practice ones, but I feel like I completely failed these ones . . . </p>
<p>What’s this speed of light/relativity question? Was it on the same page as the airplane question?
Again, asking this because I feel like I accidentally skipped over that page . . . very very very very very angry.</p>
<p>Alright I’d have to agree that the angle is smaller. 2 Wrong so far then lol.</p>
<p>i left the t = 1/20 question blank, had no idea</p>
<p>zhaplove17: Ooohhh I remember a 1/20 thing.
It was about that stupid double graph right?
Anyone remember the options?</p>
<p>the relativity question was i think like early 60s so it wouldnt b on the last page, if i remember correctly</p>
<p>@zkaplove17, you took the wavelength it traveled, which was 2m, and divided it by time (unit=seconds) to get the speed of the wave in m/s. The answer was 2/(1/20)=40m/s</p>
<p>Do you guys remember any of the other options for this relativity question?</p>
<p>Also approximately what number was the airplane question?</p>
<p>RickyRich, do you remember any of the other options besides 40 m/s? I don’t think I put that . . .</p>
<p>for the displacement of the two objects, one horizontal, the other vertical…</p>
<p>did you guys get: v x sqrt ( 2h/g)</p>
<p>because: the displacement in height: deltaY = 0.5 a t^2, where a = g, and Y = h, so t = sqrt (2h / g)</p>
<p>and displacement of a horizontal trajectory is vt so i said v x sqrt (2h/ g)</p>
<p>@Abrayo, dont wry dude, i think t he curve is gonna b huge, the only person ik who has done well is that guy who took AP Physics B and C on this thread, all my friends said it was impossible, ik i got a bunch wrong and i omitted 4, im still hopin for 750-800, im just trying to recall more questions</p>
<p>@Zkaplove17, is this what is this relativity question you speak of? Do you remember the question?</p>
<p>What was the one that had the comet going around the sun and the velo and accel vectors?</p>
<p>oh no i got v x sqrt ( h /g ) not 2h</p>
<p>I got the same thing as RickyRich… if you look at the graphs, it was displaced by 2m (as he said…) and 2m is the same is one wavelength…</p>
<p>one wavelenght = 0.05 second, so 2m = 0.05 s… multiply by 20 and u get 40m/s as he said…</p>
<p>and i believe the airplane was earlier in the test</p>
<p>Yes, I got v sqrt (2h/g), skepticidal.</p>
<p>Still worrying . . . accidentally missing 5 questions is huuuge.</p>
<p>I said velocity was tangent and a was pointing inwards.</p>
<p>Hmm if the airplane was earlier on then maybe I actually did it.</p>
<p>its acceleration was pointed toward the sun, but velocity was straight to the left</p>
<p>scohajo:</p>
<p>Velocity should have been tangent to the orbit, acceleration should have been pointing toward the sun.</p>
<p>FOR THE COMET QUESTION, ACCELERATION DOES NOT POINT TOWARDS THE SUN.
The velocity was tangential to the path of travel, so directly left. The acceleration was the acceleration VECTOR of both centripetal acceleration (down) and tangential acceleration (since this was not circular orbit, but elliptical orbit, and tangential velocity changes due to Kepler’s Laws). The net acceleration pointed to the bottom left.</p>
<p>zkap, how did you get h? what/which formulas did u use</p>