Friday
March 6, 2015

Homework Help: PHYSICS

Posted by Jane on Monday, February 22, 2010 at 3:25pm.

The frequency of an ambulance siren is 700 Hz. If a pedestrian on the side of the road hears the siren at 756 Hz approximately how fast and in what direction is the ambulance moving?

The answer is 90 km/h and towards the person..im not sure how to come to this answer though...any help is greatly appreciated.

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