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Unformatted text preview: 50. We are combining two eﬀects: the reception of a moving object (the truck of speed u = 45.0 m/s) of
waves emitted by a stationary object (the motion detector), and the subsequent emission of those waves
by the moving object (the truck) which are picked up by the stationary detector. This could be ﬁgured
in two steps, but is more compactly computed in one step as shown here:
fﬁnal = finitial v+u
v−u = (0.150 MHz) 343 m/s + 45 m/s
343 m/s − 45 m/s = 0.195 MHz . ...
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.
- Fall '08