SACK ATTACK: The 49ers' pass rush was supposed to suffer without star linebackers Aldon Smith, in rehab following a second drunkendriving arrest, and the injured Patrick Willis. Instead, the 49ers sacked Sam Bradford five times, including a lost fumble at the Rams 3 that set up a fourthquarter score. Harbaugh thought all the replacements stepped up nicely.Manning at QB in KC would change Jamaal Charles role somewhat, and might cut down on his carries. But he might become even more of a big play threat because the Manning factor would keep defenses from loading up to stop him. Plus, Jamaal is a terrific receiving threat.

The flight trajectory of an American football largely depends on its aerodynamic characteristics. Despite the popularity of the game, it appears that little information on the aerodynamic force experienced by an American football especially under crosswinds is available in the open literature. The shape of an American football is similar to that of an ellip