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Question 17N.3.SL.TZ0.e.ii

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

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.

Deduce, without further calculation, how the time taken for A to meet B, according to an observer in B, compares with the time taken for the same event according to an observer in A.

[2]

Markscheme

gamma is smaller for B

so time is greater than for A

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