All AP Physics B Resources
Example Questions
Example Question #1 : Momentum
Two astronauts, Ann and Bob, conduct a collision experiment in a weightless, frictionless environment. Initially Ann moves to the right with a momentum of , and Bob is initially at rest. In the collision, the two astronauts push on each other so that Ann's final momentum is to the left. What is Bob's final momentum?
Possible Answers:
to the right
to the right
to the left
to the right
to the left
Correct answer:
to the right
Explanation:
Apply conservation of momentum before and after the collision.
.
Taking left to be the negative direction, and noting that Bob's initial momentum is 0 since he is at rest, we can use the provided information to see that .
Solving for , we get . Since this answer is positive, Bob's momentum is in the positive direction (to the right).
All AP Physics B Resources
Popular Subjects
French Tutors in Boston, Reading Tutors in Boston, Statistics Tutors in Washington DC, Chemistry Tutors in Seattle, English Tutors in Boston, Computer Science Tutors in Houston, GMAT Tutors in San Francisco-Bay Area, English Tutors in San Diego, MCAT Tutors in Philadelphia, Statistics Tutors in Phoenix
Popular Courses & Classes
ACT Courses & Classes in Boston, LSAT Courses & Classes in Los Angeles, GRE Courses & Classes in Dallas Fort Worth, SAT Courses & Classes in Atlanta, Spanish Courses & Classes in Chicago, LSAT Courses & Classes in Miami, MCAT Courses & Classes in Miami, SSAT Courses & Classes in San Francisco-Bay Area, Spanish Courses & Classes in Boston, GMAT Courses & Classes in New York City
Popular Test Prep
MCAT Test Prep in Los Angeles, ACT Test Prep in Dallas Fort Worth, LSAT Test Prep in New York City, GMAT Test Prep in Denver, ISEE Test Prep in Atlanta, ACT Test Prep in Philadelphia, SAT Test Prep in Phoenix, LSAT Test Prep in Boston, GRE Test Prep in Boston, GRE Test Prep in Dallas Fort Worth