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Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalpost and experiences a backward force of $1.76\times 10^{4}\textrm{ N}$ for $5.50\times 10^{-2}\textrm{ s}$.
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Final Answer
$-0.800 \textrm{ m/s}$
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OpenStax College Physics Solution, Chapter 8, Problem 16 (Problems & Exercises) (2:15)

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