posted by Anonymous .
A quarterback takes the ball from the line of scrimmage, runs backward for 8 yards, and then runs sideways parallel to the line of scrimmage for 5 yards. At this point, he throws a 49 yard forward pass straight down the field. What is the magnitude of the football's resultant displacement in yards?
41 yards down the field and 5 yards sideways.
Use the Pythagorean theorem for the hypotenuse. .