1. PAGE 1!
Fancy Title
Name
Date
Class Period

2. What is the elastic energy stored in spring?
PAGE 2!
One model of tennis ball launcher has advertised that it is capable of imparting 15,000 J of kinetic energy to a 0.8 kg ball initially at rest.
A student carefully measures the compression of the spring to be 0.20 m.
What is the elastic energy stored in spring?

3. What is the elastic energy stored in spring?
PE1 + KE1 = PE2 + KE2
They will be equal!
KE = 15,000 J

4. What is the value of the spring constant for the tennis ball launcher according to the data provided?
Force = F = kx F = load applied on the spring = mg m = 0.8 kg g = 9.8 m/sec^2
k = spring constant x = 0.20 m

5. What is the value of the spring constant for the tennis ball launcher according to the data provided?
PE = ½ kx2  rearrange for: k = PE / (½ x2 )
k = 15,000 / (½ )
k = 15,000 / (½ 0.04 )
k = 15,000 / (0.02) = 750,000 N/m

6. PAGE 3!
Write a new problem and solve it, using the same equation as #1 & #4 on the 6 Question Mini Sheet Assigned yesterday (12/04/14)

7. PAGE 4!
Record the IMPORTANT information in Questions #2 (mountain runners) on this Mini Book Page

8. PAGE 5!
Record the IMPORTANT information in Questions #3 (roller coaster) on this Mini Book Page. This information will account for two separate questions on your exam.

9. Create a new problem and solve using the equation for Work
PAGE 6!
Create a new problem and solve using the equation for Work

10. Create a new problem and solve using the equation for Power
PAGE 7!
Create a new problem and solve using the equation for Power

11. Provide a new example, with a diagram, of how energy can change form.
PAGE 8!
Energy can be neither created nor destroyed, but can change form, for instance chemical energy can be converted to kinetic energy in the explosion of a stick of dynamite.
Provide a new example, with a diagram, of how energy can change form.