The 0.02-kg particle moves along the dashed trajectory shown and has indicated velocities at positions A and B. Calculate the time average of the moment about O of the resultant force P acting on the particle during the 0.5 second required for it to go from A and . 30 A4 m/s 0.02 kg 60 - 6 m/s TA 90 mm 180 mm 30 30