A police car is moving to the right at 24 m/s, while a speeder is coming up from behind at a speed 44 m/s, both speeds being with respect to the ground. The police officer points a radar gun at the oncoming speeder. Assume that the electromagnetic wave emitted by the gun has a frequency of 7.8 x 10? Hz. Find the difference between the frequency of the wave that returns to the police car after reflecting from the speeder's car and the frequency emitted by the police car. 'l'l|>) ) ) )f' .- Vpolice Alem= Number n Units v