Lesson 2: 

ENERGY

Learning Goals:
1. What is Energy?
​
2. What is the Relationship Between Mechanical Work and Kinetic Energy?

​3. What is Gravitational Potential Energy?

​4. What is Mechanical Energy?

Cool Physics: The Future of Energy?!?

What is Energy?
Sample Problem:
The Relationship Between
​​Mechanical Work and Kinetic Energy:
Sample Problem:
  • Fg and Fn are equal, so they cancel each other.
  • Since there is no friction, Fnet is equal to Fa, directed horizontally.
  • Since Fnet is in the same direction as the displacement, we may use the equation:
       ... to calculate the total work (Wnet) done on the puck.
  • ​We may then use the equation:
       ... to calculate the puck’s final speed, Vf.
What is Gravitational Potential Energy?
Sample Problem:
What is Mechanical Energy?

Quizlet: Lesson 2

Learn all about Energy on Quizlet!
HOMEWORK:

1. Textbook: Page 235 #1, 2a, 3
2. Quizlet: Lesson 2 Activities