DP Physics (last assessment 2024)

Question 20N.3.SL.TZ0.5a(i)

Date	November 2020	Marks available	[Maximum mark: 1]	Reference code	20N.3.SL.TZ0.5a(i)
Level	SL	Paper	3	Time zone	TZ0
Command term	Calculate	Question number	a(i)	Adapted from	N/A

a(i).

[Maximum mark: 1]

20N.3.SL.TZ0.5a(i)

The spacetime diagram is in the reference frame of an observer O on Earth. Observer O and spaceship A are at the origin of the spacetime diagram when time $t = t' = 0$ . The worldline for spaceship A is shown.

(a(i))

Calculate in terms of $c$ the velocity of spaceship A relative to observer O.

[1]

Markscheme

$0.6 c$ ✓

Accept $1.8 \times 10^{8} m s^{- 1}$ if unit given.

Examiners report

Very well answered.

Syllabus sections

Option A: Relativity

Option A: Relativity » Option A: Relativity (Core topics) » A.3 – Spacetime diagrams

Option A: Relativity » Option A: Relativity (Core topics)

Question 20N.3.SL.TZ0.5a(i)

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