Physics WPE Flashcard

Front

How do you find total mechanical energy?

Back

Total mechanical energy is found by adding potential energy and kinetic energy.

Front

What is the formula for Gravitational Potential Energy?

Back

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

Front

What is energy?

Back

Energy is the ability to do work.

Front

What are energy and work measured in?

Back

Energy and work are measured in Joules.

Front

A 50N block is lifted 10 m. How much work was done?

Back

The work done is 500 J (Work = Force x Distance).

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion, calculated as KE = 1/2 m v^2.

Front

What is the principle of conservation of energy?

Back

The principle states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between potential energy and kinetic energy?

Back

Potential energy is stored energy based on position, while kinetic energy is energy of motion.

Front

What is the unit of power?

Back

The unit of power is the Watt (W), which is equal to one Joule per second.

Front

What is work in physics?

Back

Work is done when a force causes displacement, calculated as Work = Force x Distance x cos(θ).