(adsbygoogle = window.adsbygoogle || []).push({}); SIMPLE math-- Didn't I do this right?

In a physics experiment, students calculate the force of friction that a table exerts to stop a paper cone. When the ball starts at a height of 18 cm, the force of friction is 2.2 Newtons. What will be the force of friction if the ball starts from a height of 72 cm?

Wouldn't you set up a proportion and solve for x which is the force in Newtons? I did and got 8.8 N. Isn't that correct? For some reason, my homework is marked wrong and if I made a mistake, I want to know what it was.

(I also tried solving for their energies so that I could get work = the change in total energy so I could find the force using the work formula. I came up with 8.8 N with this approach also)

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# Homework Help: SIMPLE math- Didn't I do this right?

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