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You are on a train traveling east at speed of 27.0 m/s with respect to the groun

ID: 2161431 • Letter: Y

Question

You are on a train traveling east at speed of 27.0 m/s with respect to the ground.

1) If you walk east toward the front of the train, with a speed of 1.0 m/s with respect to the train, what is your velocity with respect to the ground?

2) If you walk west toward the back of the train, with a speed of 1.4 m/s with respect to the train, what is your velocity with respect to the ground?

3) Your friend is sitting on another train traveling west at 16.0 m/s. As you walk toward the back of your train at 1.4 m/s, what is your velocity with respect to your friend?


Explanation / Answer

1) V = v(w.r.t train) + v(train)

V = 1 + 27 = 28 m/s towards east

2) V = -1.4 + 27 = 25.4 m/s towards west

3) V = 25.4 - 16 = 19.4 m/s towards west

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