This document discusses different types of energy including kinetic energy and potential energy. It provides the formulas for calculating kinetic energy (KE=1/2mv^2) and potential energy (PE=mgh). Examples are given for calculating the kinetic energy of a moving truck and the gravitational potential energy of an apple in a tree. The reader is asked to take notes and solve problems to be submitted for credit.

2.  As you go through the lesson, please take notes
and write down your solutions to the problems
to be turned in for later credit.

4.  Kinetic Energy
 Potential Energy
 Heat
 Electrical
 Chemical
 Light
 Nuclear

5.  In this lesson, we will only be focusing on
kinetic and potential energy. However, look
up the definitions for the others to be prepared
for a quiz in the future

6.  Kinetic Energy: the energy of a moving object
 KE=1/2mv2
 m=mass of the object (g, kg)
 V=velocity of the object (m/s)
 Ex: If a truck of mass 250kg is traveling at 5m/s, what
is the kinetic energy of the truck?
 Please click the correct answer:
 A. 3.13x103 J
 B. 4.11x103 J
 C. 3.11x104 J

9.  Potential Energy: the energy stored in an object
that has potential to be released
 There are two different kinds:
 Gravitational
 Elastic

10.  Stored energy depending on the force of
gravity and height of an object
 PE=mgh
 m=mass of the object
 g=the acceleration of gravity (9.8m/s2)
 h=height of the object
 Ex: What is the gravitational potential energy of an
apple weighing 150 grams in a tree of height 5.79 m?
 Please click the correct answer:
 7.62x103J
 9.63x103J
 8.51x103J

13.  The energy stored in elastic objects as a result
of stretching and compressing
 This week we only focused on gravitational
potential energy, next week we will go into
greater detail with elastic potential energy

14.  Please click here to see a short video that sums
up potential and kinetic energy

15.  "GED Physics: Kinetic and potential energy in a
roller coaster." Web. 29 Sept 2010.
<http://www.youtube.com/watch?v=-
dpBVtAbKJU>.
 Serway, Raymond, and Chris Vuille. Essentials
of College Physics. Belmont, California:
Brooks/Cole, 2007. 90-104. Print.