An emergency vehicle has its siren on and is moving east

Last updated: 7/26/2022

An emergency vehicle has its siren on and is moving east along Shea Blvd at a constant speed. Samantha is riding her bicycle west along Shea Blvd at a constant speed. The emergency vehicle is approaching Samantha Compared to the frequency of sound waves produced by the siren, the frequency that Samantha hears is. Select one: a. lower b. higher c. the same d. none of these