t’s a 10.5 °C spring day, and a high-speed chase is being recorded for the 36th sequel of The Quick and the Angry. A police car is chasing after a muscle car on a major highway. The police car is moving at 56.0 m/s toward the muscle car and the muscle car is moving at 60.0 m/s away from the police car. Given that the observed frequency of the siren is 398.5 Hz, what is the true frequency of the

A train approaches a platform at a speed of 22 km/h while it blows its whistle. Someone on the platform hears the whistle at 342 Hz. Calculate the actual frequency of the whistle. (speed of sound = 343 m/s)

A 7500-kg rocket blasts off vertically from the launch pad with a constant upward acceleration of 2.25 m/s2 and feels no appreciable air resistance. When it has reached a height of 525 m, its engines suddenly fail; the only force acting on it is now gravity. (a) What is the maximum height this rocket will reach above the launch pad? (b) How much time will elapse after engine failure before the rocket comes crashing down to the launch pad, and how fast will it be moving just before it crashes? (c) Sketch ay-t, vy-t, and y-t graphs of the rocket's motion from the instant of blast-off to the instant just before it strikes the launch pad.

A train approaches a platform at a speed of 30 km/h while it blows its whistle. Someone on the platform hears the whistle at 275 Hz. Calculate the actual frequency of the whistle. (speed of sound = 343 m/s)

A bystander hears a siren vary in frequency from 584 Hz to 370 Hz as a fire truck approaches, passes by, and movesaway on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.)

3. A bystander hears a siren vary in frequency from 598 Hz to 364 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.) m/s f60 ss f60 s ssfo ssf60 s

A cop car’s siren has a frequency of 750. Hz. If you are driving towards the cop’s siren at a speed of 20.0 m/s, what frequency would you hear? The speed of sound is 343 m/s.

An ambulance with a siren sounding at 1600 Hz drives by a bystander at the sidewalk. After being passed, the bystander hears a frequency of 1590 Hz. How fast is the ambulance moving? Assume speed of sound is 343 m/s.

A red train is stationary and a green train is moving forward away from the red train at a speed of 28 m/s. Between the trains, is a bicyclist moving towards the stationary red train at a speed of 15.3 m/s. each train has a whistle with a frequency of 349 Hz. the air temperature is 2 degrees celsius.  What are the frequencies of the whistles heard by the bicyclist, coming from the green and red trains? PLEASE INCLUDE UNITS AND ROUND TO 4TH DECIMALS PLACE.

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