Conservation of Energy Flashcard

Front

What is gravitational potential energy (GPE)?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically calculated as GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What does the Law of Conservation of Energy state?

Back

The Law of Conservation of Energy states that energy cannot be created or destroyed, it can only be transformed from one form to another.

Front

How is total mechanical energy defined?

Back

Total mechanical energy is the sum of an object's potential energy and kinetic energy. It remains constant in a closed system without external forces.

Front

At what point does an object have maximum kinetic energy?

Back

An object has maximum kinetic energy at the lowest point of its motion, where its speed is greatest.

Front

At what point does an object have maximum potential energy?

Back

An object has maximum potential energy at the highest point of its motion, where its height is greatest.

Front

What is kinetic energy (KE)?

Back

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

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, keeping the total mechanical energy constant.

Front

What is the relationship between potential energy and height?

Back

Potential energy is directly proportional to height; as height increases, potential energy increases.

Front

What is the significance of neglecting friction and air resistance in energy problems?

Back

Neglecting friction and air resistance simplifies calculations by assuming that total mechanical energy is conserved.

Front

How do you calculate total mechanical energy at a given height?

Back

Total mechanical energy at a given height is calculated by adding the potential energy (mgh) and kinetic energy (1/2 mv²) at that height.