Summarize your findings in a short report of 150 words. Include your hypothesis, observations, data, calculations, and conclusion. The answers to the questions below should be included in your conclusion.

Why didn't the box slide off the table before you put enough coins in the bag?
What was the coefficient for the smooth surface? For the rough surface?
What was the difference between the two coefficients? What caused this difference?
What factors caused a margin for human error in this investigation?
Would the coefficient vary if you tied the string to a similar object of different masses, but on the same surface? Explain.
What did you learn from this investigation? Be thoughtful in your answer.

Summarize your findings in a short report of 150 words. Include your hypothesis, observations, data, and conclusions. Be sure to answer the questions below as well as including your own findings and thoughts in your summary.

How many coins did it take to pull the bag off the table without the rollers (pencils)? With the rollers?

Why didn't the box slide off the table before you put enough coins in the bag?

What happened differently when you put the rollers underneath the matchbox? Why?

What factors caused a margin for human error in this investigation? What was your margin of error when you repeated this experiment?

What was the coefficient of friction for the matchbox? Would the coefficient vary if you tied the string to a similar object of different mass? What about a different object with the same mass? Explain.

What did you learn from this investigation? Be thoughtful in your answer.

Explanation: