Read the passage below and choose the right answer to the following question (choices are increased or decreased ):

A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves.


The cop shot the radar gun at the super fast car, which increased or decreased the waves? 

