A 10 kg cart with a velocity of 2 m/s rolls towards a spring, compressing it as it comes to a stop. There is an increase of 10 J of Thermal Energy between the initial and final positions. The spring compresses by 0.5 m.

1. Draw an LOL diagram for the cart as it starts moving and after it compresses the spring, coming to a stop. Assume there is no Thermal Energy at the initial position.

1. What is the Kinetic Energy of the cart at the initial position?

Given(s)	Unknown(s)	Equation(s)	Substitution(s)	Solution(s)

1. Write a total energy equation for each step

Cart is in motion	Cart is stopped while compressing the spring
Total Energy =	Total Energy =

1. What is the Spring Potential Energy of the cart at the final position?

1. What is the spring constant of the spring?

Given(s)	Unknown(s)	Equation(s)	Substitution(s)	Solution(s)

1. Suppose now that there was no friction as the cart traveled and compressed the spring. Which of the following best describes how the situation would be different from the situation described in the original scenario?
2. There would be more thermal energy at the final position
3. There would be more spring potential energy at the final position
4. There would be less spring potential energy at the final position
5. There would be the same amount of spring potential energy at the final position

7. Explain your answer to #6:

Energy Vocab Quiz

A. Total Energy	B. Kinetic Energy	C. Spring Constant	D. System
E.Spring Potential Energy	F. Conservation Law	G. Gravitational Potential Energy	H. Thermal Energy

Match a vocab term from the word bank above to a possible definition.

Some terms may be used more than once. Every term is used at least once.

1. _____ Energy stored due to friction
2. _____ Determines the elasticity of a spring
3. _____ mgh
4. _____ Energy stored due to velocity
5. _____ The sum of all energy stored in a system
6. _____ Energy stored due to height
7. _____ The slope of a Fspring vs. Stretch Distance graph
8. _____ kx²
9. _____ Energy cannot be created or destroyed, it can only change forms
10. _____ Energy stored due to stretching or compressing a spring
11. _____ All of the objects that interact and through which energy flows
12. _____ mv²