AP Physics 1: Algebra-Based · Past multiple choice · Question 6, 2012 AP Physics B course description · Calculator allowed
Two balls that stick after a head-on hit
A ball of mass M at speed v meets a ball of mass 2M coming the other way at half that speed, and they stick. Find their speed afterward.
Lessons this question tests
1 Read the question
The question is College Board's: sample question 6 in AP Physics B and Physics C Course Description. It starts on page 50 of the PDF. College Board no longer posts this edition, so it opens from the copy the Internet Archive saved on July 17, 2013. A graphing calculator is allowed, as on the exam.
Open Question 6 (PDF, page 50)
2 Pick your answer
Question and answer key: College Board, from the Internet Archive. The title and summary are ours.