A motor cycle starts from rest and accelerates along a straight path at 2 m/s 2 . At the starting point of the motor cycle there is a stationary electric siren. How far has the motor cycle gone when the driver hears the frequency of the siren at 94% of its value when the motor cycle was at rest? (Speed of sound = 330 ms –1 )
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A
Motor cycle has travelled a distance s. Its velocity at that point
The observed frequency
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