- #1
dustybray
- 10
- 0
I'm having trouble solving this one:
Two motorcycles are traveling in opposite directions at the same speed, when one of the cyclists blasts her horn, which has a frequency of 544 Hz. The other cyclist hears the frequency as 563 Hz. If the speed of sound in air is 344 m/s, what is the speed of the motorcycles? Ans. 5.88 m/s
If I use f[o] = f * ( ( v + v[o] ) / ( v – v ) )
Then I guess I could make v = -v[o]; so,
( f[o] / f ) = ( ( v + v[o] ) / ( v + v[o] ) )
or
( f[o] / f ) = ( ( v - v[o] ) / ( v - v[o] ) )
But how do I solve for v[o]??
Thanks,
dusty...
Two motorcycles are traveling in opposite directions at the same speed, when one of the cyclists blasts her horn, which has a frequency of 544 Hz. The other cyclist hears the frequency as 563 Hz. If the speed of sound in air is 344 m/s, what is the speed of the motorcycles? Ans. 5.88 m/s
If I use f[o] = f
Then I guess I could make v
( f[o] / f
or
( f[o] / f
But how do I solve for v[o]??
Thanks,
dusty...