Kinematics · JEE Main previous year questions

2009 1 question

1. Q602009 · 27 Apr 2009 · Shift 1

   A motor cycle starts from rest and accelerates along a straight path at $2m/s^2$. 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 $\mathrm{sound}=330m{s}^{-1}$)

   1. A.$98m$
   2. B.$147m$
   3. C.$196m$
   4. D.$49m$
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   Answer: A