A car is stopped at a traffic light
Asked by maham237 @ in Physics viewed by 275 People
A car is stopped at a traffic light. When the light turns green, the car starts from rest with an acceleration of 2.5 m/s2 . Also, as the light turns green, a truck traveling with a constant velocity of 10 m/s passes the car. The truck’s horn is stuck, emitting sound at a frequency of 440Hz. What frequency of sound is heard by the driver of the car, (a) 5 seconds before the light turned green? (b) 5 seconds after the light turned green? (c) 10 seconds after the light turned green?