A particle is subjected to a time-varying force for a short interval
PHYSICS · Single correct · AP · Physics 1: Algebra-based · Linear Momentum · Linear Momentum
Problem
A particle is subjected to a time-varying force for a short interval. The positive and negative portions of the force–time curve have equal areas. Which one of the following statements is correct?
(a) The particle’s kinetic energy must decrease.
(b) The particle’s momentum must become zero.
(c) The particle’s momentum remains unchanged.
(d) The particle necessarily reverses its direction of motion.