8 - Lesson 28 and 30 Forms of Energy/PE in Systems

Front

What is the energy stored in a system due to the position of objects in the system that are interacting at a distance?

Back

Potential energy.

Front

What scientific law states that the total energy of an isolated system always remains the same?

Back

Law of Conservation of Energy.

Front

What type of potential energy is stored in a system of objects interacting due to gravitational forces?

Back

Gravitational potential energy.

Front

What type of potential energy is stored in a system of objects interacting by electric forces?

Back

Electric potential energy.

Front

What is the definition of energy in the context of physics?

Back

The ability to cause motion or change.

Front

What is the formula for gravitational potential energy?

Back

PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

What is kinetic energy?

Back

The energy of an object due to its motion.

Front

What is the formula for kinetic energy?

Back

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

Front

What is the relationship between potential energy and kinetic energy in a closed system?

Back

The total mechanical energy is conserved; as potential energy increases, kinetic energy decreases, and vice versa.

Front

What is mechanical energy?

Back

The sum of potential energy and kinetic energy in a system.