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Q. Starting from rest, a car accelerates at a constant rate, reaching 88 km/h in 12s. (a) What is its acceleration? (b) How far does it go in this time?

Q. How fast should a car move toward you for the car's horn to sound 2.88% higher in frequency than when the car is stationary? The speed of sound is 343 m/s.
A)42.5 Hz
B)54.5 Hz
C)61.8 Hz
D)65.4 Hz
v=16
fs=583
vs=343
(16+0)/16

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