1. 1. Write the Law of Conservation of Energy.
Energy cannot be created or destroyed. It is conserved/transferred.

2. 2. The energy transfer of a moving object can be represented by the formula:
GPEi + KEi = GPEf + KEf

3. GPEi + KEi = GPEf + KEf KEi = GPEf
3. Rewrite the formula by eliminating the energies that are not considered for this lab.
GPEi + KEi = GPEf + KEf
KEi = GPEf

4. 4. Substitute the formulas for the remaining energies.
KEi = GPEf
½ m v2 = m g h

5. 5. We will rearrange the formula to isolate velocity. This gives us:
v = g h

6. 6. Rearranged for height, the formula is:
h = ½ v2 g

7. Now, we will use this math to find the initial velocity of the “poppers”!
Get into your lab groups, and complete the procedure on the next page.
Complete “Questions” 1-4.