Train A is 200 m long and moves east at 15 m/s

PHYSICS · Subjective · AP · Physics 1: Algebra-based · Kinematics · Kinematics

Problem

Train A is 200 m long and moves east at 15 m/s. On a parallel track, train B is 150 m long and moves west at 25 m/s. How much time elapses from the instant their front ends align until their rear ends have completely passed one another?

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