Question 1
A particle moves along the x-axis. The potential energy of the system is U(x) = ax² − bx³, where a and b are positive constants. What is the force on the particle at position x?
AP Physics C pass rates and score distributions
Mechanics: 73.2% scored 3 or higher, mean 3.30. E&M: 72.9%, mean 3.38.
| Mechanics, 3 or higher | 73.2% of 65,980 |
|---|---|
| E&M, 3 or higher | 72.9% of 29,708 |
| Scored 5 | 21.7% Mechanics, 25.2% E&M |
| Mean score | 3.30 Mechanics, 3.38 E&M |
Mechanics, 2025
- 5: 21.7% (14,320)
- 4: 24.0% (15,809)
- 3: 27.5% (18,137)
- 2: 16.0% (10,575)
- 1: 10.8% (7,139)
E&M, 2025
- 5: 25.2% (7,477)
- 4: 23.7% (7,030)
- 3: 24.1% (7,158)
- 2: 17.8% (5,299)
- 1: 9.2% (2,744)
Try 2 questions
Question 2
Four point charges sit at the corners of a square with sides 0.20 m, as shown: +2.0 nC, +2.0 nC, −3.0 nC and +4.0 nC. What is the electric potential at the center of the square?
FAQ
What is the AP Physics C pass rate?
In May 2025, 73.2% scored 3 or higher in Mechanics and 72.9% in E&M.