Q. An arrow is shot horizontally with an initial speed of 31.80m/s. it strikes a target at a point which is 53.80 cm below initial height. How far away was the target from the bow?
Q. An ambulance moving at 42 m/s sounds its siren whose frequency is 450 Hz. a car is moving in the same direction as the ambulance at 25 m/s. what frequency does a person in the car hear as the car approaches the ambulance? After the ambulance passes car?