GPE & KE Flashcard #2, 23-24, gk

Front

What is Gravitational Potential Energy (GPE)?

Back

GPE is the energy an object possesses due to its position in a gravitational field, typically calculated as GPE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What is Kinetic Energy (KE)?

Back

KE is the energy an object has due to its motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the SI unit for energy?

Back

The SI unit for all types of energy is the Joule (J).

Front

At what point does an object have the greatest GPE?

Back

An object has the greatest GPE at its highest point in a gravitational field.

Front

How does GPE change as an object falls?

Back

As an object falls, it loses GPE and gains KE.

Front

Calculate the GPE of a 60 kg person standing 5 m high. What is the GPE?

Back

GPE = mgh = 60 kg * 9.8 m/s² * 5 m = 2940 J.

Front

What happens to KE and GPE during free fall?

Back

During free fall, an object gains KE and loses GPE.

Front

What is the formula for calculating Kinetic Energy?

Back

The formula for Kinetic Energy is KE = 1/2 mv².

Front

If a 5 kg object is moving at 2 m/s, what is its KE?

Back

KE = 1/2 * 5 kg * (2 m/s)² = 10 J.

Front

What is the relationship between GPE and height?

Back

GPE is directly proportional to height; as height increases, GPE increases.