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| Accuracy | Question | Correct/Attempt | Last Answer |
|---|---|---|---|
| 100% | A person stands on a scale in an elevator. When the elevator begins to move, the scale reads 20% less than the person's true weight. What is the elevator's acceleration? AP Physics C: Mechanics / Unit 2 – Force and Motion Dynamics | 2/2 | April 23, 2026 17:25 |
| 100% | A particle moves along the x-axis according to the equation x(t) = 3t² - 2t where x is in meters and t is in seconds. At t = 2 s, which of the following is a scalar quantity? AP Physics 1 / Unit 1 – Kinematics | 1/1 | April 23, 2026 17:22 |
| 50% | A student stands on a moving walkway that travels at 1.5 m/s east. The student walks at 0.8 m/s west relative to the walkway. A ball is thrown horizontally at 10 m/s east relative to the ground. If the ball experiences a constant acceleration of 9.8 m/s² downward, what is the ball's acceleration as observed by the student? AP Physics 1 / Unit 1 – Kinematics | 1/2 | April 23, 2026 17:22 |
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