E-4 Flashcard

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. It can be gravitational potential energy (due to height) or elastic potential energy (due to deformation).

Front

What is thermal energy?

Back

Thermal energy is the internal energy of an object due to the kinetic energy of its molecules. It is often associated with heat.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What happens to kinetic energy when an object slows down?

Back

When an object slows down, its kinetic energy decreases, often being converted into other forms of energy, such as thermal energy.

Front

What is the relationship between kinetic energy and velocity?

Back

Kinetic energy is directly proportional to the square of the velocity. If the velocity doubles, the kinetic energy increases by a factor of four.

Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like atoms and molecules. It is released or absorbed during a chemical reaction.

Front

What is elastic potential energy?

Back

Elastic potential energy is the energy stored in elastic materials as the result of their stretching or compressing.

Front

What is the difference between kinetic energy and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on an object's position or state.

Front

What is friction?

Back

Friction is the resistance that one surface or object encounters when moving over another. It converts kinetic energy into thermal energy.