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Question 17N.3.SL.TZ0.a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.SL.TZ0.a
Level SL Paper 3 Time zone TZ0
Command term Define Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.SL.TZ0.a

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.

Define frame of reference.

[1]

Markscheme

a co-ordinate system in which measurements «of distance and time» can be made

Ignore any mention to inertial reference frame.

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