Remember from chapter 10 that kinetic energy is energy in motion.  The kinetic energy of an object depends on the mass of the object as well as its speed.  Remember that the abbreviation for kinetic energy is KE and the unit for ALL types of energy is the Joule (J).

The kinetic energy of an object will always be positive because mass is always positive and if you square a negative velocity, it becomes positive.

Potential energy can be transferred into kinetic energy.  Look at a bow and arrow.  As you pull back the arrow into the bow, you increase the elastic potential energy of the bow.  When the arrow is released, that elastic potential energy is transferred into the arrow as kinetic energy.

Can an object have both kinetic and potential energy at the same time?  Watch this video to find out!

Be sure to head over to google classroom and fill out the exit pass.