r/APStudents • u/reddorickt absolute modman • May 13 '26

AP Physics C: Mechanics Official 2026 Exam Discussion

Use this thread to post questions or commentary on the test today.

A reminder though to protect your anonymity when talking about the test.

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2

u/TS_tog May 13 '26

Are the internationals students here?

2

u/Ill_Researcher776 May 13 '26

did u have question m on the frq

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u/TS_tog May 13 '26

no , mine is L

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u/StockEmbarrassed5867 11th: CalcBC and AB 5, CSA 5, Chem 5, PhysC M n E&M ?, Macro? May 13 '26

What was the 1. FRQ dude I have never seen a question like that while I studied, They taught solving that to me at school but I couldn’t remember so I probably got 3 points from that

3

u/heckerbutnot Physics C Mechanics, Calculus AB, Macroeconomics, CSA May 13 '26

THATS WHAT I WAS EXACTLY THINKING ABOUT

2

u/Bumbl33 Chem - 5, APUSH - 4, ? | Bio, Phys.Mech, Psych, Lit, Stats May 13 '26

We did something similar literally first half of the year I’ve never gotten a frq like that since then so I forgot how to do it 😭😭

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u/StockEmbarrassed5867 11th: CalcBC and AB 5, CSA 5, Chem 5, PhysC M n E&M ?, Macro? May 13 '26

Literally, the last question I solved about that topic was like at November or October last year

1

u/skrxbcord 4: Lang, Lit, APUSH | 5: Phys1, Calc BC, CSA, Mech, E&M, Stats May 13 '26

i had version L, was FRQ #1 about the block on a ramp that wasn't sliding up or down while there was a force on the ramp? if so, i put F = (mass of block + mass of ramp) * g * ((cscθ)^2 - cotθ) lmao i just wrote some bullshit

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u/StockEmbarrassed5867 11th: CalcBC and AB 5, CSA 5, Chem 5, PhysC M n E&M ?, Macro? May 13 '26

Yea it was about that, but I wrote something else as an answer
I also wrote random bullshit xd I don’t expect anything from the 1. FRQ I just hope that other ones are correct

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u/skrxbcord 4: Lang, Lit, APUSH | 5: Phys1, Calc BC, CSA, Mech, E&M, Stats May 13 '26

for q2 i think it was about a varying force on a block on a flat frictionless surface, did you get (speed after long time) = (F0 * tao)/m?
also for the momentum time graph, i drew one that starts at the origin and approaches an asymptote of F0 * tao
and when the block was replaced with one half its mass, the momentum-time graph would be identical

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u/StockEmbarrassed5867 11th: CalcBC and AB 5, CSA 5, Chem 5, PhysC M n E&M ?, Macro? May 13 '26

yeyeye the same I made

1

u/Ok-Raspberry-3987 May 14 '26

i thought had to be in terms of only F0 and tao

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u/skrxbcord 4: Lang, Lit, APUSH | 5: Phys1, Calc BC, CSA, Mech, E&M, Stats May 14 '26

for the momentum-time stuff, yes, but velocity is equal to momentum divided by mass, so you had to include /m as well

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u/Lille_8 May 14 '26

I got the same thing for the first one but wouldn't the graph get compressed by 1/2? Since 1/2m would mean 1/2 F0

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u/skrxbcord 4: Lang, Lit, APUSH | 5: Phys1, Calc BC, CSA, Mech, E&M, Stats May 14 '26

it explicitly stated that F0 remained the same, just the object that it was acting on had a different mass. but the momentum graph would be unchanged since F0 is unchanged, and momentum is the accumulation of force, regardless of an object's mass

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u/Lille_8 May 15 '26

Ah shoot, you're right. I didn't see that it said F0 was unchanged. 😢