Youve attached a bungee cord to a wagon and are using it to pull your little sister while you take her for a jaunt. The bungees unstretched length is 1.1m , and you happen to know that your little sister weighs 220N and the wagon weighs 95N . Crossing a street, you accelerate from rest to your normal walking speed of 1.6m/s in 2.5s , and you notice that while youre accelerating, the bungees length increases to about 1.6m. What's the force constant of the bungee cord, assuming it obeys Hooke's law?

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