The 2.4kg particle moves in the horizontal x-y plane and has the velocity shown at time t=0. If the force F = 2+3t^2/4 N, where t is time in seconds, is applied in the particle in the y-direction beginning at time t = 0, determine the velocity of the particle 4s after F is applied and specify the corresponding angle measured counter clockwise from the x-axis to the direction of the velocity

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