Two music students find their mandatory physics class extrem…

Twо music students find their mаndаtоry physics clаss extremely bоring, and they decide to have some fun by using music to measure a car's speed. One of the students stands on the ground and plays Middle C (262 Hz) on his saxophone. The other student travels in a car with open windows carrying a similar saxophone and playing the same note. When the car approaches the standing student, this standing student hears 6 beats per second. Assuming that the speed of sound in air is 343 m/s,What is the speed of the car?