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Question 19M.3.SL.TZ2.7b

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.3.SL.TZ2.7b
Level SL Paper 3 Time zone TZ2
Command term Label Question number b Adapted from N/A
b.
[Maximum mark: 1]
19M.3.SL.TZ2.7b

A spaceship moves away from the Earth in the direction of a nearby planet. An observer on the Earth determines the planet is 4 ly from the Earth. The spacetime diagram for the Earth’s reference frame shows the worldline of the spaceship. Assume the clock on the Earth, the clock on the planet, and the clock on the spaceship were all synchronized when ct = 0.

(b)

Label, with the letter E, the event of the spaceship going past the planet.

[1]

Markscheme

E labelled at x  = 4, ct = 5 ✔

Check that E is placed on the worldline of S.

Examiners report

Event E was usually correctly labelled on the space-time diagram.

Syllabus sections