2 min: Take out HW Question: Where is the Math????
2 min: Take out Loose Leaf (At the top write:) “Footprint: Pounds per Square Inch”
2 min: Take out Loose Leaf (At the top write:) “Footprint: Pounds per Square Inch” What is pounds per square inch? PSI is a unit to measure pressure- from the force of a punch to the amount of air in a bike tire.
It takes at least 750 Pounds per Square Inch to break a stack of cement bricks!
Today we are measuring…. Pounds per Square Inch that your Feet support HOW??
STEP 1: Put your foot on the graph paper STEP 2: Trace your foot STEP 3: ESTIMATE the area STEP 4: Divide weight/area (DON’T FORGET THAT YOU HAVE TWO FEET) STEP 5: Record this Ratio STEP 6: Repeat on your Tip-Toes!