# Qualitatively explain how you would expect the potential energy to change as a glider slides down...

## Question:

Qualitatively explain how you would expect the potential energy to change as a glider slides down an inclined air track, where friction is negligible.

## Energy conservation principle:

The energy conservation principle consists of a physical law that states that the total energy of a system will conserve a closed system. Energy transformations may occur within a system, but the total overall energy of the system will remain constant. The total energy of a system will consist of the sum of the total kinetic and potential energy.

{eq}E=K_E+U_E {/eq}

## Answer and Explanation:

As the glider slides down an inclined air track with no friction, the potential energy of the system will decrease. As the glider descends, it will increase its speed, and so, the kinetic energy of the system will increase. As there's no force acting on the system, energy has to conserve. As such, if the kinetic energy increases, the potential energy has to decrease.

#### Learn more about this topic:

Energy Conservation and Energy Efficiency: Examples and Differences

from Geography 101: Human & Cultural Geography

Chapter 13 / Lesson 9
107K