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College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000

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Section
BuyFindarrow_forward

College Physics

1st Edition
Paul Peter Urone + 1 other
ISBN: 9781938168000
Textbook Problem

(a) How fast would an athlete need to be running for a 100-m race to look 100 yd long? (b) Is the answer consistent with the fact that relativistic effects are difficult to observe in ordinary circumstances? Explain.

To determine

(a)

The speed would an athlete need to be running for a 100-m race to look 100 yd long.

Explanation

Given info:

  c=3×108 ms1

  L0100 m

  L100 ydL91.44 m

Formula used:

For length calculation, the relation between length and relativistic factor is

  L0γL

  γL0L

Relativistic factor is

  γ11v2c2

Velocity can

  vc1+

To determine

(b)

The answer consistent with the fact that relativistic effects are difficult to observe in ordinary circumstances.

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