The police car moves faster than the speed of sound?

[powermind]

Good! I would like to be sure about your answer DaleSpam.
Same example of closed vehicle. The experiment will be inside the vehicle.
in case of moving:
1- The observer is in the back of the vehicle. The sound source is in the front. The observer will hear the sound after Δt1.
2- The observer is in the front. The sound is in the back. The observer will hear the sound after Δt2.
in case of no moving.
3- Same of #1 but he will here after Δt3
4- Same of #2 but he will here after Δt4

The all factors like the temperature are same in all cases

Is Δt1=Δt2 or not?
Is Δt3=Δt4 or not?
Is Δt1=Δt3 or not necessary?
Is Δt2=Δt4 or not necessary?

Answering these questions will clear the confusion.

Regards,

 

[Dale]

The experiment will be inside the vehicle.

I assume that the air inside the vehicle is at rest wrt the vehicle (i.e. no air conditioning or other fans inside).

Is Δt1=Δt2 or not?
Is Δt3=Δt4 or not?
Is Δt1=Δt3 or not necessary?
Is Δt2=Δt4 or not necessary?

They are all the same (assuming that the vehicle is moving with some v<<c)

 

[sophiecentaur]

Good! I would like to be sure about your answer DaleSpam.
Same example of closed vehicle. The experiment will be inside the vehicle.
in case of moving:
1- The observer is in the back of the vehicle. The sound source is in the front. The observer will hear the sound after Δt1.
2- The observer is in the front. The sound is in the back. The observer will hear the sound after Δt2.
in case of no moving.
3- Same of #1 but he will here after Δt3
4- Same of #2 but he will here after Δt4

The all factors like the temperature are same in all cases

Is Δt1=Δt2 or not?
Is Δt3=Δt4 or not?
Is Δt1=Δt3 or not necessary?
Is Δt2=Δt4 or not necessary?

Answering these questions will clear the confusion.

Regards,

You really think so? lol.