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Secure l https://session.masteringphysics.com/mycti ::: Apps D Apple D Disney , what to Watch-Y.. E ESPN D Yah HW 3 Red Light, Green Light PartA A car and a train move together along straight, parallel paths with the same constant cruising speed vo. At t = 0 the car driver notices a red light ahead and slows down with constant acceleration -ao. Just as the car comes to a full stop, the light immediately turns green, and the car then accelerates back to its original speed vo with constant acceleration ao. During the same time interval, the train continues to travel at the constant How mu Express speed to Submit Part B How much ti Express you

Explanation / Answer

Part A - time taken by car to come to full stop,

full stop means final velocity is zero.

using kinematics equation

v = u + at

0 = vo + (-ao)t

t = vo/ao

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Part B

v = u + at

v = 0 + at

vo = aot

t = vo / ao

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Part C

v2 - u2 = 2ad

d = vo2 / ao

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