2008 F = ma Exam — Question 9 — Physics Guide

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FMA-2008-09 · 2008 F = ma (AAPT)

2008 F = ma Exam — Question 9

9. A ball of mass m1 travels along the x-axis in the positive direction with an initial speed of v0. It collides with a ball of mass m2 that is originally at rest. After the collision, the ball of mass m1 has velocity v1xˆx + v1yˆy and the ball of mass m2 has velocity v2xˆx + v2yˆy. Consider the following ﬁve statements: I) 0 = m1v1x + m1v2x II) m1v0 = m1v1y + m2v2y III) 0 = m1v1y + m2v2y IV) m1v0 = m1v1x + m1v1y V) m1v0 = m1v1x + m2v2x Of these ﬁve statements, the system must satisfy — Source: Question 9, 2008 F = ma Exam, © 2008 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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