Science of American Football


From big, bulldozing to small, speedy NFL running backs come in many
shapes , sizes but to succeed at football all wedding backs must excel at
kinematics. The branch of classical mechanics that defines how objects move because kinematics describes motion.

It describes everything in NFL running back does basically which is his motion up
the field as he tries to score kinematics, uses three concepts to define
motion position velocity, acceleration position defines location
within a space, such as the surface of a football field position would be a
running back to the location on the field. He can change that with his
motion in this play let’s define the running backs position where he takes
the ,off after executing the play however his new position is his
opponent’s endzone.

The position relative to the goal line
changes the set of options that the running back has in terms of the
direction he chooses to run a second kinematic concept is velocity which
describes both the direction, speed of the running back in the NFL one way
speed is measured is a player’s time in the 40-yard dash a long long time ago
almost right at ten years ago a 40-yard dash was 426 to help.
illustrate the concepts of kinenew orleans nfl american footballmatics deuce mcallister all-time leading rusher
for the New Orleans Saints ran the 40-yard dash in front of a high speed
phantom camera you want to stay low as possible while running the 40
particularly the first ten yards so it’s literally like you’re being shot out of
the cannon using.

McCallister’s personal best in the forty four point two six
seconds it’s easy to calculate his speed divide the distance by the time to get
his average speed nine point three nine yards per second or twenty-eight point
one seven feet per second to define the velocity simply add a direction twenty
eight point one seven feet per second north when we talk about speed we’re
talking about the magnitude of velocity, then its direction is dictated by
where the running back goes on the field great speed is used to elude tacknfl national fotball leaguelers
when you have speed, you have very good speed that five-yard plate for most
backs become becomes a 50-yard play also helpful is the ability to cut or
suddenly change directions that helps you make moves against the defender to
helps you stay free fleeing tackle beyond position, velocity the third.
kinematic concept is acceleration which describes how fast speed is changing you
never know when you may need to hit that button you know per se to accelerate at
maximum speed to unders, acceleration consider again
McCallister‘s 40-yard
dash while his average speed is twentyeight point one seven feet per second
his instantaneous speed varies . He starts with zero speed, that
increases his speed or accelerates until he reaches a top speed let’s say
hypothetically 31 point 5 feet per second if we know how long it takes
McAllister to hit his top speed let’s assume 1.2 seconds then it’s possible to
calculate his acceleration as the change in speed divided by the time
acceleration is the change in velocity per unit time which with blue
comparative velocity was the change in this distance per unit time in this case
31 point 5 feet per second divided by 1.2 seconds means that McCallister’s
acceleration was 26.2 5 feet per second squared we want to reach our top
velocity as quickly as possible someone with very low acceleration might take 5
yards to reach top velocity while someone with great acceleration might be
able to reach top velocity, pass that distance on the playing field
acceleration or the ability to reach top speed quickly maybe a running backs most.
potent weapon if you can accelerate you’re going to get the top speed even
If your top speed isn’t as fast as the guy that’s faster than you you’re going
to beat him to his top speed therefore you’re going to be more successful than
he is without kinematics, it’s concepts of position velocity,
acceleration NFL running backs would be easy prey, football itself wouldn’t
be nearly as fun to watch.