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In the question 1, is your approximate speed relative to

Chapter 17, Problem 2RQ

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QUESTION:

If you walk at 1 km/h down the aisle toward the front of a train that moves at 60 km/h, what is your speed relative  to the ground?

In the preceding question, is your approximate speed relative to the Sun as you walk down the aisle of the train changed slightly or by a lot?

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QUESTION:

If you walk at 1 km/h down the aisle toward the front of a train that moves at 60 km/h, what is your speed relative  to the ground?

In the preceding question, is your approximate speed relative to the Sun as you walk down the aisle of the train changed slightly or by a lot?

ANSWER:

Solution Step 1 of 3 In question 1, Here since the speeds are very less compared to speed of light, we can use normal velocity vector addition; The speed of the person moving on the aisle of train with respect to ground (assuming the person is moving towards front end of train) vpersonground= vtrainground v persontrain Where v is the speed of person relative to ground personground v traingrounds the speed of train relative to ground v persontrains the speed of person relative to train Using v trainground0 km/h and v persontrain1 km/h in above equation, vpersonground= 60 km/h + 1 km/h v = 61 km/h personground Therefore, the speed of person moving on aisle of train relative to ground is 61 km/h.

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