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Q.  A particle describes uniform circular motion in a circle of radius 2 m, with angular speed of 2 rad/. The magnitude of change in its velocity in π 2 s   i s
            Z e r o             4 2   m / s             8   m / s             2 2   m / s

Dear Student,


r=2m , ω=2 rad/s, angular displacement in π/2 sec=2*π2=π radian .velocity at t=0  u=2*2j^=4j^velocity at t=π/2 sec  v=-2*2j^=-4j^change in velocity =-4j^-4j^=-8j^change in magnitude is 8 m/sRegards

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