If the velocity of train A relative to train B is toward the east

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

If the velocity of train A relative to train B is

15\,\text{m\,s}^{-1}

toward the east, what is the velocity of train B relative to train A? (a)

15\,\text{m\,s}^{-1}

east (b)

0\,\text{m\,s}^{-1}

(c)

15\,\text{m\,s}^{-1}

west (d)

30\,\text{m\,s}^{-1}

east