2009 F = ma Exam — Question 20 — Physics Guide

Home Practice Mock Tests Problems Profile About

0 Days 0 XP Sign in

Back to Problems

F = ma (Final Problems)

Momentum

FMA-2009-20 · 2009 F = ma (AAPT)

2009 F = ma Exam — Question 20

20. Consider a completely inelastic collision between two lumps of space goo. Lump 1 has mass m and originally moves directly north with a speed v0. Lump 2 has mass 3m and originally moves directly east with speed v0/2. What is the ﬁnal speed of the masses after the collision? Ignore gravity, and assume the two lumps stick together after the collision. — Source: Question 20, 2009 F = ma Exam, © 2009 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.

Physics Guide

Free AP Physics 1/C (Mech) and F=ma training. Built by students, for students.

Problem Bank About

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.