DP Physics (last assessment 2024)

Question 17N.3.SL.TZ0.5d

Date	November 2017	Marks available	[Maximum mark: 2]	Reference code	17N.3.SL.TZ0.5d
Level	SL	Paper	3	Time zone	TZ0
Command term	Determine	Question number	d	Adapted from	N/A

[Maximum mark: 2]

17N.3.SL.TZ0.5d

Two rockets, A and B, are moving towards each other on the same path. From the frame of reference of the Earth, an observer measures the speed of A to be 0.6c and the speed of B to be 0.4c. According to the observer on Earth, the distance between A and B is 6.0 x 10⁸ m.

(d)

Determine, according to an observer in A, the velocity of B.

[2]

Markscheme

$\frac{{ - 0.4 - 0.6}}{{1 + 0.24}}$

«–» 0.81c

Syllabus sections

Option A: Relativity

Option A: Relativity » Option A: Relativity (Core topics) » A.2 – Lorentz transformations

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

Question 17N.3.SL.TZ0.5d

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