1. Tarzan, who weighs 820 N, swings from a cliff at the end of a 20.0 m vine that hangs from a high tree limb and initially makes an angle of 22.0 with the verti- cal. Assume that an z axis extends horizontally away from the cliff edge and a y axis extends upward. Im- mediately after Tarzan steps off the cliff, the tension in the vine is 760 N. Just then, what are (a) the force on him from the vine in unit-vector notation and the net force on him (b) in unit-vector notation and as (c) a magnitude and (d) an angle relative to the positive direction of the r axis? What are the (e) magnitude and (f) angle of Tarzan's acceleration just then? 7