[填空题]
A diver (such as the one shown inzij54dguw9(tp0vmo-t 2 kix / Fig. 8–29) can reduce her moment of nz72gvdqab a9,/cq7s inertia by a facnzacgas bq27 d 9qv,/7tor of about 3.5 when changing from the straight position to the tuck position. If she makes 2.0 rotations in 1.5 s when in the tuck position, what is her angular speed ($rev/s$) when in the straight position? $rev/s$