The point moves in a circle with a radius of R = 0.8 m according to the equation φ = At Bt3, where φ is a curvilinear coordinate measured along the circle from a certain starting point; A = 9 m / s; B = -0.1 m / s3. Determine the speed v, the total linear acceleration a and the angular acceleration of the point in t = 3 s after the start of movement.

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