How fast is it going? physics

label Physics
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Apr 4th, 2015

c =speed of sound

 v = emitter speed

+v = receding

 -v = approaching

approaching velocities =fh 

 receding velocities = fl

fl = f0*c/(c+v)

 fh = f0*c/(c-v)

 = fl/fh 

= (c-v)/(c+v) 

=fl(c+v)/fh-c 

= -v =v = c(fh-fl)/(fh+fl)

 = 343*0.8/2.8 

= 98 m/s 

93*3600

= 352.8 km/hr

Apr 3rd, 2015

c =speed of sound

 v = emitter speed

+v = receding

 -v = approaching

approaching velocities =fh 

 receding velocities = fl

fl = f0*c/(c+v)

 fh = f0*c/(c-v)

 = fl/fh 

= (c-v)/(c+v) 

=fl(c+v)/fh-c 

= -v =v = c(fh-fl)/(fh+fl)

 = 343*0.8/2.8 

= 98 m/s 

98*3600

= 352.8 km/hr


Apr 3rd, 2015

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Apr 4th, 2015
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Apr 4th, 2015
Oct 22nd, 2017
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