In 1939 or 1940, Emanuel Zacchini took his hu man-cannonball act to an extreme: After being shot from a cannon, he soared over three Ferris wheels and into a net (see the gure). Assume that he is launched with a speed of 27 m/s and at an angle of 58". (a) Treating him as a particle, calculate his clearance over the rst wheel. (b) If he reached maximum height over the middle wheel, by how much did he clear it? (c) How far from the cannon should the net's center have been positioned (neglect air drag)? (a) Number n Units v (b) Number Units v (c) Number . Units . V. An Earth satellite moves in a circular orbit 955 km above Earth's surface with a period of 104.0 min. What are (a) the speed and (b) the magnitude of the centripetal acceleration of the satellite? (a) Number n Units v (b) Number n Units v When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of about 16.0 km (about the size of a typical city). If a neutron star rotates once every 0.770 seconds, (a) what is the speed of a particle on the star's equator and (b) what is the magnitude of the particle's centripetal acceleration? (c) If the neutron star rotates faster, do the answers to (a) and (b) increase, decrease, or remain the same? (a) Number I Units v (bl Number I Units V (c) v