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Constant acceleration motion.

It's first and ten. let's call the line of scrimmage the origin. The coach calls a dive (a staright ahead running play.) The line does a great job and opens a huge hole for the running back. If the running back gets the hand-off 4.0 yards behind the line of scrimmage with an initial speed of 3.0 yards/sec and accelerates at a rate of 1.5 yds/s/s for 2.8 seconds before getting tackled, what is the running backs final position? (how many yards from the line of scrimmage?)

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