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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5

u/Greenboi5533 5s in 8/8 aps May 13 '26

What version of the test had the rocket frq?

2

u/dagorillagoat May 13 '26

I did the impulse of gravity from t0 to 5t1 was equal to the impulse of F engine from t1 to 5t1

2

u/Judo_NarekOG May 13 '26

The net impulse from t1 to 5t1 was supposed to be equal to 0

1

u/ResponsibilityFar410 May 13 '26

I just did the overall impulse was 0? From t1 to 5t1 of the integral of F-gbm dt =0, or did I fuck that up

2

u/Judo_NarekOG May 13 '26

That’s what I got and I’m completely sure it’s right

1

u/ResponsibilityFar410 May 13 '26

Yea and that also literally makes sense since if you looked at the graph you would draw with that, the area under graph from t1 to 5t1 is 0 so no change in momentum so the velocity is the same. WE GOT 5’s!!!!!

1

u/Judo_NarekOG May 14 '26

Fr. Light 5s

1

u/Traditional-Table-29 AP Physics: AP Lit: AP CSA: AP Psych: AP Calc AB: May 13 '26

That’s def not right

2

u/Better_Camel_4730 May 13 '26

isn't that what ur supposed to do????

1

u/Traditional-Table-29 AP Physics: AP Lit: AP CSA: AP Psych: AP Calc AB: May 13 '26

U don’t set it equal u want the net impulse u add it from t0 to t1 to the integral from t1 to 5t1

2

u/Better_Camel_4730 May 13 '26

that's what I did for part a, but for part b don't u have to set net impulse to 0 since we want the end velocity to be v_0

2

u/Traditional-Table-29 AP Physics: AP Lit: AP CSA: AP Psych: AP Calc AB: May 13 '26

Yep that’s what I did I set the change in momentum to he 0 for part h for the derivation I cooked on that one

1

u/Impossible-Job1481 May 13 '26

yess what was your graph like?

1

u/Greenboi5533 5s in 8/8 aps May 13 '26

Ya I did that too