Find the speed of the ambulance

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Q. Standing on a sidewalk, you hear a frequency of 560 Hz from a siren of an approaching ambulance. After the amblance passes, you hear a frequency of 480 Hz. Find the speed of the ambulance.

Q. Determine the tangential and centripetal components of the net force exerted on a car (by the ground) when its speed is 38 m/s, and it has accelerated to this speed from rest in 9.5 s on a curve of radius 370 m. The car's mass is 1000 kg.

Reference no: EM1354810

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