102. (a) The linear speed att= 15.0 s is vatt===0.500m ssm s21507 50dibg...The radial (centripetal) acceleration at that moment is avrr=2275030 0...msm1.875m s2bgThus, the net acceleration has magnitude: aaatr=+=+=2205001875194.2chch(b) We note that GGavt||. Therefore, the angle between
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