### Work and Energy

A Concept-Builder is an interactive questioning module that presents learners with carefully crafted questions that target various aspects of a concept. Each Concept Builder focuses the learner's attention upon a discrete learning outcome. Questions target that outcome from a variety of angles using multiple difficulty levels or varying activities. The following Concept Builders target concepts associated with Work and Energy.

Name That Energy

Learning Goal: To analyze a physical situation and to determine what forms of mechanical energy are possessed by the object in that situation.

What's Up (and Down) with KE and PE?

Learning Goal: To analyze a physical situation and to determine whether the kinetic energy and the gravitational potential energy increases, decreases, or remains the same.

Learning Goal: To analyze a physical situation and to rank the potential energy, the kinetic energy, and the speed at the various marked locations.

Work

Learning Goal: To identify whether positive, negative, or zero work is being done, to identify the force that is doing the work, and to describe the energy transformation associated with such work.

Words and Charts

Learning Goal: To match a verbal description of an object’s motion to a simple energy bar chart.

Match That Bar Chart

Learning Goal: To analyze a physical situation and identify the set of energy bar charts that describe the energy storage modes for various locations.

LOL Charts (a.k.a., Energy Bar Charts)

Learning Goal: To use an energy bar chart to describe how energy is stored, transferred, and/or conserved for a variety of physical situations.

Stepping Up to PE and KE

Learning Goal: To relate the height of an object to the potential energy and to use energy conservation to determine the KE values at various heights for a simple falling motion.

Up and Down with Energy

Learning Goal: To conduct an energy analysis of an up-and-down free fall motion in order to determine values of PE, KE, and v.

Energy Analysis 1

Learning Goal: To use energy conservation principles to determine the potential energy and kinetic energy of an object at varying locations along its path.

Energy Analysis 2

Learning Goal: To use energy principles to determine the potential energy and kinetic energy of an object at varying locations along its path if given information regarding the amount of dissipated energy.