When to use c±v₀ and c±Vs in the Doppler effect formula?

[k121212]

can someone pleasezz explain the dopplers effect

n when to use the c-v0 , c+v0 ,c +Vs ,c-Vs

etc etc in the formula in the pic


thnx a lot in advance

 

[OlderDan]

can someone pleasezz explain the dopplers effect

n when to use the c-v0 , c+v0 ,c +Vs ,c-Vs

etc etc in the formula in the pic


thnx a lot in advance

When in doubt, think about only one velocity being other than zero. Source moving away, frequency drops- positive. Source moving toward you, frequency rises- negative, You move toward source, frequency rises- positive. You move away from source, frequency drops- negative.