Force

Materials:
Long piece of regular wood
a short piece of wood covered with sand paper on one side.
a protractor
caculations
Procedure:
We figured out at what angle the short peice of wood would slide down the long piece of wood on the smooth side. We also figured out the angle at which the sand paper side of the wood slid down the long piece of wood.
Results:
With the block weighing 160 grams. the regular board slide down the long piece at the angle of 22 degrees. the sand paper side of the block slide down the long board at an angle of 72 degrees.

Click link for work
https://docs.google.com/document/d/1xPdwACqlIdCP_0ZQ4-FrxPAk6dEnwGxpLNv5Sbfcl8M/edit?hl=en_US#