Education Technology

# Activities

• ##### Subject Area

• Science: Physical Science: Forces and Motion

6-8

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• TI-Nspire™ Navigator™
• ##### Software

TI-Nspire™ CX
TI-Nspire™ CX CAS

4.5

## Energetic Coasters

#### Activity Overview

In this lesson, students will explore the potential energy (PE) and kinetic energy (KE) of a roller coaster.

#### Objectives

• Students will explore the potential energy (PE) and kinetic energy (KE) of a roller coaster.
• Students will explore energy transformations related to the motion of a roller coaster with and without friction.

#### Vocabulary

• conservative vs. non-conservative forces
• kinetic energy (KE)
• potential energy (PE)
• total energy
• work

#### About the Lesson

In this lesson, students begin with an exploration of the relationships between work, potential energy, and kinetic energy. The simulation uses a block that is either lifted and dropped or is pulled up an incline and allowed to slide back down. These concepts are then applied to a simulation of a roller coaster car moving along a track.

As a result, students will:

• Observe that an external force doing positive work increases the mechanical energy of an object, while friction causes a decrease in mechanical energy.
• Describe how energy transforms between potential and kinetic forms, and, in the absence of friction, the total mechanical energy remains constant.
• Relate the concepts of work and energy to the design and motion of a roller coaster.