Physics Work-Energy Quick Review

Front

What is Kinetic Energy?

Back

Kinetic Energy is the energy of motion.

Front

How does velocity affect Kinetic Energy?

Back

When velocity triples, Kinetic Energy increases by 9 times.

Front

What happens to Potential Energy (PE) and Kinetic Energy (KE) in a pendulum as it swings from the highest point to the lowest point?

Back

As the pendulum swings from the highest point (C) to the lowest point (A), KE increases and PE decreases.

Front

Which object has the most Kinetic Energy? A 20 kg toddler running at 5 m/s, A 50 kg toddler running at 30 m/s, A 90 kg toddler running at 30 m/s, or A 100 kg toddler running at 2 m/s?

Back

A 90 kg toddler running at 30 m/s has the most Kinetic Energy.

Front

What is the formula for calculating Kinetic Energy?

Back

Kinetic Energy (KE) = 1/2 mv², where m is mass and v is velocity.

Front

What is Potential Energy?

Back

Potential Energy is the energy stored due to an object's position or height.

Front

How do you calculate Potential Energy?

Back

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

Front

What is the relationship between work and energy?

Back

Work is done when energy is transferred or transformed; it is equal to the change in 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.

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy in SI is the Joule (J).