Conservation of Energy

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.

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What is Kinetic Energy?

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 is Gravitational Potential Energy?

Back

Gravitational Potential Energy is the energy stored in an object as a result of its height above the ground, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

How does the speed of an object affect its Kinetic Energy?

Back

The faster an object moves, the more kinetic energy it has, as kinetic energy is proportional to the square of its velocity.

Front

What is Mechanical Energy?

Back

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

Front

What happens to Mechanical Energy in a closed system?

Back

In a closed system, the total mechanical energy remains constant, as energy is conserved.

Front

What is the formula for calculating Gravitational Potential Energy?

Back

The formula for Gravitational Potential Energy is PE = mgh.

Front

If a 5 kg ball is lifted 12 m, what is its Gravitational Potential Energy?

Back

The Gravitational Potential Energy is 600 J (using PE = mgh, where g = 9.8 m/s²).

Front

What is the relationship between height and Gravitational Potential Energy?

Back

Gravitational Potential Energy increases with height; as an object is raised higher, its potential energy increases.

Front

What is the significance of the highest point in a roller coaster in terms of energy?

Back

At the highest point, the roller coaster has maximum potential energy and minimum kinetic energy.