Answer:
0.2885 m/s²
Explanation:
The formula for centripetal acceleration is given as;
Given that;
speed = v = 1.5m/s
radius = r = 7.8
Anyone here like conspiracies? I personally do, and I want to know what you guys think of the Last Thursday conspiracy. This is
1 answer:
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Answer:
Explanation:
In the first case you can use the expression for the Doppler effect when the source is getting closer and getting away
( 1 )
( 2 )
f' = perceived frequency when the source is getting closer
f'' = perceived frequency when the source is getting away
f = source frequency
v = relative speed
vs = sound speed
by dividing (1) and (2) you have
but this is the relative velocity, you have that
a. hence, the speed of the police car is 102.5m/s