we seen in the figure , P1 is in circular motion and P2 is in rectilinear motion
For uniform speed change , at =dV/dt
at =(6 m/s - 3 m/s)/(2 s)
at= 1.5 m/s^2
From kinematic equation ,
V1 =V0 +at*t
V1 =3 m/s + (1.5 m/s^2)*1 s
=4.5 m/s
ar =V1^2/(R)
=(4.50 m/s)^2/(0.060 m)
ar =337.5 m/s^2
answer is
at P1, a =337.5 m/s^2
at P2 , a =1.5 m/s^2
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