APFIVE Recent Question Answers
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| Accuracy | Question | Correct/Attempt | Last Answer |
|---|---|---|---|
| 33% | A 0.2 kg block attached to a spring oscillates with amplitude 0.15 m and period 0.4 s. At what fraction of the amplitude is the kinetic energy three times the potential energy? AP Physics 1 / Unit 7 – Oscillations | 1/3 | March 9, 2026 08:08 |
| 50% | For a mass-spring system with displacement x(t) = A cos(ωt), at what fraction of the period T after t = 0 does the velocity first reach its maximum magnitude? AP Physics 1 / Unit 7 – Oscillations | 1/2 | March 9, 2026 08:03 |
| 100% | A simple pendulum of length L oscillates with small amplitude. If the total energy of the system is E, what is the maximum speed of the pendulum bob? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 07:59 |
| 100% | A 2 kg block attached to a spring oscillates with amplitude 0.3 m and period 0.5 s. At what position(s) is the kinetic energy equal to the potential energy? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 07:48 |
| 50% | A mass on a spring undergoes simple harmonic motion described by $$x(t) = 0.05\cos(2\pi t + \frac{\pi}{4})$$ meters. At what time in seconds does the mass first reach its maximum displacement from equilibrium? AP Physics 1 / Unit 7 – Oscillations | 1/2 | March 9, 2026 07:21 |
| 100% | Two identical springs with spring constant k are attached to a mass m. If the springs are arranged in parallel and the system oscillates with amplitude A, at what displacement from equilibrium is the kinetic energy equal to the potential energy? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 07:11 |
| 100% | A mass-spring system has displacement x(t) = 0.03 sin(5t + π/6) meters. When the displacement is zero, what is true about the velocity and acceleration? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 05:43 |
| 100% | At what point in SHM is the total mechanical energy all potential? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 05:42 |
| 100% | Which of the following best describes simple harmonic motion? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 05:41 |
| 100% | A pendulum of length L swings with small amplitude. If air resistance gradually reduces the amplitude to half its initial value, what happens to the total mechanical energy of the system? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 05:37 |
| 100% | For a mass-spring system in SHM, if the displacement from equilibrium doubles, what happens to the restoring force? AP Physics 1 / Unit 7 – Oscillations | 1/1 | March 9, 2026 04:21 |
| 50% | What is the relationship between potential energy and displacement in a simple harmonic oscillator? AP Physics 1 / Unit 7 – Oscillations | 1/2 | March 9, 2026 04:21 |
| 100% | Which statement best describes an explosion in terms of momentum? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 07:07 |
| 100% | In an inelastic collision, what happens to the total kinetic energy of the system? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 07:07 |
| 100% | What is required for the total momentum of a system to be conserved? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 07:00 |
| 100% | What happens to the velocity of objects after an explosion? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 07:00 |
| 100% | How does the center-of-mass velocity of a system change if no external forces act on it? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 07:00 |
| 100% | Two carts collide on a frictionless track. What is conserved? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 06:59 |
| 100% | A constant force of 20 N acts on a 4.0 kg object for 0.5 seconds. If the object is initially at rest, what is the object's kinetic energy after the force is applied? AP Physics 1 / Unit 4 – Linear Momentum | 1/1 | February 25, 2026 06:59 |
| 50% | Two objects experience the same impulse. Object A has twice the mass of object B. If both objects start from rest, what is the ratio of object A's final velocity to object B's final velocity? AP Physics 1 / Unit 4 – Linear Momentum | 1/2 | February 25, 2026 06:58 |
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