Work, Power, and Energy Review

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 is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state, such as a rock at the top of a cliff.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, which depends on its mass and velocity.

Front

How is work defined in physics?

Back

Work is defined as the product of force and displacement in the direction of the force, measured in joules.

Front

What is power in the context of work?

Back

Power is the rate at which work is done or energy is transferred, measured in watts.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.

Front

What are the three forms of energy a television transforms electrical energy into?

Back

A television transforms electrical energy into light, thermal energy, and sound.

Front

What is an example of energy conversion?

Back

An example of energy conversion is transforming electrical energy into thermal energy, such as in a toaster.

Front

What is the formula for calculating kinetic energy?

Back

The formula for kinetic energy (KE) is KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the formula for calculating potential energy?

Back

The formula for potential energy (PE) is PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.