Question: Sarah has one piece of wood that is smooth and polished and another that is rough and unfinished. Which of the following is true?
Choices:
text: both pieces of wood will create the same amount of friction
label: A
text: the unfinished wood will generate more heat than the other while rubbed over the floor
label: B
text: the rough wood will more easily move when rubbed over the tile than the finished wood.
label: C
text: the finished wood will generate more heat when it is rubbed back and forth over a tile floor.
label: D
Answer: B
Fact: as the roughness of something increases , the friction of that something will increase when its surface moves against another surface