7. A baseball pitcher can throw a 132 km/h (82 mph) curve ball that rotates about 6.0x102 rpm. What is the angular velocity of the thrown ball? The pitcher's throwing motion lasts about 0.15 s, and the moment of inertia of the ball is 8.0x10-5 kg-m2. What average torque did the pitcher exert on the ball? 9. A bicycle is clamped upside down on a workbench for the bicycle repair woman to repair a front wheel axle. She gives the front wheel a spin with her hand, and the wheel rotates at 5.0 rev/s. What is the angular velocity of the wheel? If the moment of inertia of the wheel is 0.060 kg. m², what angular impulse did the repair woman give the wheel?