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, calculated as GPE = mass x gravity x height.

Front

How do you calculate GPE?

Back

GPE = mass (kg) x acceleration due to gravity (9.8 m/s²) x height (m).

Front

What is Kinetic Energy (KE)?

Back

KE is the energy an object has due to its motion, calculated as KE = 0.5 x mass x velocity².

Front

How do GPE and KE relate during free fall?

Back

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

Front

What is the formula for calculating weight?

Back

Weight = mass x acceleration due to gravity.

Front

What is the value of acceleration due to gravity on Earth?

Back

The acceleration due to gravity on Earth is approximately 9.8 m/s².

Front

If a 60 kg person is 5 m above the ground, what is their GPE?

Back

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

Front

At what height does a 2 kg object have 20 J of GPE?

Back

Height = GPE / (mass x gravity) = 20 J / (2 kg x 9.8 m/s²) = 1.02 m.

Front

What happens to GPE and KE when an object is thrown upwards?

Back

The object gains GPE and loses KE as it rises.

Front

What is the relationship between mass and GPE?

Back

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