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Question 18M.1.SL.TZ2.14

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.SL.TZ2.14
Level SL Paper 1 Time zone TZ2
Command term Question number 14 Adapted from N/A
14.
[Maximum mark: 1]
18M.1.SL.TZ2.14

Two sound waves from a point source on the ground travel through the ground to a detector. The speed of one wave is 7.5 km s–1, the speed of the other wave is 5.0 km s–1. The waves arrive at the detector 15 s apart. What is the distance from the point source to the detector?

A.     38 km

B.     45 km

C.     113 km

D.     225 km

[1]

Markscheme

D

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