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Question 18M.3.SL.TZ2.5c

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.SL.TZ2.5c
Level SL Paper 3 Time zone TZ2
Command term Outline Question number c Adapted from N/A
c.
[Maximum mark: 1]
18M.3.SL.TZ2.5c
(c)

Outline why the observed times are different for A and B.

[1]

Markscheme

observer B measures the proper time and this is the shortest time measured

OR

time dilation occurs «for B's journey» according to A

OR

observer B is stationary relative to the particle, observer A is not

[1 mark]

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