Energy and Work Flashcard

Front

What is Potential Energy (PE)?

Back

Potential Energy is the energy stored in an object due to its position or configuration, often related to its height above the ground.

Front

How is Potential Energy calculated for an object near the Earth's surface?

Back

PE = mgh, where m is mass (kg), g is acceleration due to gravity (9.81 m/s²), and h is height (m).

Front

What is Mechanical Energy?

Back

Mechanical Energy is the sum of kinetic energy and potential energy in a system.

Front

What happens to Mechanical Energy when a box slides to a stop?

Back

The mechanical energy decreases due to the conversion of kinetic energy into thermal energy through friction.

Front

How does Kinetic Energy (KE) change when speed is doubled?

Back

Kinetic Energy quadruples when speed is doubled, as KE = 1/2 mv².

Front

What is the formula for Kinetic Energy?

Back

KE = 1/2 mv², where m is mass and v is velocity.

Front

What is Work in physics?

Back

Work is defined as the amount of force applied over a distance in the direction of the force.

Front

What is the unit of Work?

Back

The unit of Work is the Joule (J), which is equivalent to one Newton meter (N·m).

Front

What is the relationship between Work and Energy?

Back

Work done on an object results in a change in energy of that object.

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.