DP Physics (first assessment 2025)

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Question 23M.2.HL.TZ2.5c

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.HL.TZ2.5c
Level HL Paper 2 Time zone TZ2
Command term Determine Question number c Adapted from N/A
c.
[Maximum mark: 2]
23M.2.HL.TZ2.5c
(c)

Determine the time coordinate ct′ when the flash of light reaches the spaceship, according to an observer at rest in the spaceship.

[2]

Markscheme

(ct')2 − 0 = 52 − 32

OR

γ = 1.25 ✓

 

ct' = 4 «km»

OR

t' = 13 «µs» ✓

 

Allow ECF from (b)

Allow ECF from MP1

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