Question

An ambulance with a siren of frequency 1000 Hz overtakes and passes a cyclist pedaling a bike at 3 m/s. If the cyclist hears the siren with a frequency of 900 Hz after the ambulance is passed, the velocity of the ambulance is:

• A. 41 m/s
• B. 45 m/s
• C. 35 m/s
• D. 50 m/s

Answer 1

Answer:

C. 35 m/s

• velocity, quantity that designates how fast and in what direction a point is moving. A point always moves in a direction that is tangent to its path; for a circular path, for example, its direction at any instant is perpendicular to a line from the point to the centre of the circle (a radius).