A quarterback takes the ball from the line of scrim- mage, runs backward for 10.0 yards, then runs side- ways parallel to the line of scrimmage for 15.0 yards. At this point, he throws a 50.0-yard forward pass straight down the field. What is the magnitude of the football's resultant displacement? (See Sample Problem 3A.)

A quarterback takes the ball from the line of scrim- mage, runs backward for 10.0 yards, then runs side- ways parallel to the line of scrimmage for 15.0 yards. At this point, he throws a 50.0-yard forward pass straight down the field. What is the magnitude of the football's resultant displacement? (See Sample Problem 3A.)