Work and Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. It is energy that has the potential to do work when released.

Front

What is kinetic energy?

Back

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

Front

What is the relationship between work and energy?

Back

Work is done when energy is transferred from one system to another. The amount of work done is equal to the change in energy of the system.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its height above the ground, calculated as the product of its weight and height.

Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force, making work easier. Examples include levers, pulleys, and inclined planes.

Front

What is the formula for 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 gravitational potential energy?

Back

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

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 mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in a system. It is the energy associated with the motion and position of an object.

Front

What is power in terms of work and energy?

Back

Power is the rate at which work is done or energy is transferred, calculated as Power = Work / Time.