1. The problem statement, all variables and given/known data Two traffic lights are 100m apart. Light 1 being due west from light 2. Car 1 is moving east at a constant speed of 25m/s. When car 1 passes light 1, car 2 starts from rest, west at a constant acceleration of 2.0 m/s². Where do they pass and how long after the light changes do they pass? 2. Relevant equations I was thinking Vf² = Vi² + 2aΔx 3. The attempt at a solution Well I tried solving for the final velocity of car 2, since Vf of car 1 would be the same as initial. Vf² = Vi² + 2aΔx = 0² + 2(2.0m/s/s)(100) Vf² = 400 Vf = 20 I'm not sure if this was the right approach but can someone point me in the right direction here?