Aquarterback takes the ball from the line of scrimmage, runs backwards for 9.0 yards, then runs sideways parallel to the line of scrimmage for 15.0 yards. at this point, he throws a 54.0-yard forward pass straight down field, perpendicular to the line of scrimmage. what is the magnitude of the football's resultant displacement?
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Aquarterback takes the ball from the line of scrimmage, runs backwards for 9.0 yards, then runs side...
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