2015 F = ma Exam — Question 10 — Physics Guide

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F = ma (First 10)

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FMA-2015-10 · 2015 F = ma (AAPT)

2015 F = ma Exam — Question 10

The following information applies to questions 9 and 10 A 0.650 kg ball moving at 5.00 m/s collides with a 0.750 kg ball that is originally at rest. After the collision, the 0.750 kg ball moves oﬀwith a speed of 4.00 m/s, and the 0.650 kg ball moves oﬀ at a right angle to the ﬁnal direction of motion of the 0.750 kg ball. 10. Let the change in total kinetic energy in this collision be deﬁned by ∆K = Kf −Ki, where Kf is the total ﬁnal kinetic energy, and Ki is the total initial kinetic energy. Which of the following is true? — Source: Question 10, 2015 F = ma Exam, © 2015 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.

AP Physics 1 and AP Physics C (Mech) problems are adapted from OpenStax College Physics for AP® Courses 2e and University Physics Volume 1, © OpenStax (Rice University), licensed under CC BY 4.0. Problem text is reproduced exactly; correct answers come from the OpenStax answer keys. For written-answer problems, the incorrect answer choices were written by Physics Guide. Physics Guide is not affiliated with or endorsed by OpenStax or the College Board.