2014 F = ma Exam — Question 4 — Physics Guide

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FMA-2014-04 · 2014 F = ma (AAPT)

2014 F = ma Exam — Question 4

4. What are the correct values of the numbers in the following statements? Assume there are no external forces, and take N = 1 to mean that the statement cannot be made for any meaningful number of particles. • If a particle at rest explodes into N1 or fewer particles with known masses, and the total kinetic energy of the new particles is known, the kinetic energy of each of the new particles is completely determined. • If a particle at rest explodes into N2 or fewer particles, the velocities of the new particles must lie in a line. • If a particle at rest explodes into N3 or fewer particles, the velocities of the new particles must lie in a plane. — Source: Question 4, 2014 F = ma Exam, © 2014 American Association of Physics Teachers (AAPT) and the U.S. Physics Team. Adapted by PhysicsTrainer: reformatted into a separate question and answer choices for online multiple-choice practice; any shared setup from nearby questions is repeated here. Not affiliated with or endorsed by AAPT or the U.S. Physics Team.

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F = ma problems are © the American Association of Physics Teachers (AAPT) and the U.S. Physics Team, the original source, and are used with permission. Problems shown here are adaptations: they have been reformatted by Physics Guide into separate question and answer-choice pieces for online multiple-choice practice. Physics Guide is an independent student project and is not affiliated with, endorsed by, operated by, or supported by AAPT, F = ma, USAPhO, or the U.S. Physics Team.

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