Energy Final Exam Review

Concepts

1. What are the different energy storage modes and how do we know when energy is stored in a certain mode?

1. How do you use LOL diagrams?

1. What is the Law of the Conservation of Energy?

1. How does energy transfer between different storage modes?

1. How do you calculate the Total Energy in a system?

1. What happens to the Total Energy when Work is done on a system?

1. What is Work and how do you calculate it?

1. What is Power and how can you generate higher amounts of power?

1. What happens to energy once it becomes Thermal Energy?

1. How do you calculate Gravitational Potential Energy, Kinetic Energy, Spring Elastic Energy, Electric Potential Energy, and Total Energy?

Calculations

A box with a mass of 2 kg is sliding along on a frictionless surface with a velocity of 9.87 m/s at a height of 1.81 m. It travels down the hill and then up another.

1. Draw an LOL diagram for the box at the following positions:

• When the box sliding at a constant velocity as shown above
• When the box is at the very bottom of the hill
• When the box is at its maximum height on the next hill.

1. What is the total energy at the initial position?

1. What is the kinetic energy at the bottom of the hill?

1. What is the velocity of the box at the bottom of the hill?

1. What is the gravitational potential energy at the max height on the next hill?

1. What is the maximum height the box will reach on the next hill?