Energy Transformations

Front

What does the law of conservation of energy state?

Back

The amount of energy coming out of a system must equal the energy that entered the system.

Front

When does a baseball have the greatest gravitational potential energy?

Back

When it reaches its highest point.

Front

How do you calculate gravitational potential energy (GPE)?

Back

GPE = mgh, where m is mass, g is gravity, and h is height.

Front

Calculate the gravitational potential energy of an object with mass 50 kg, gravity 10 m/s², and height 6 m.

Back

GPE = 50 * 10 * 6 = 3000J.

Front

What is the formula for kinetic energy (KE)?

Back

KE = \frac{1}{2}mv^2, where m is mass and v is velocity.

Front

Calculate the kinetic energy of an object with mass 200 kg and velocity 5 m/s.

Back

KE = \frac{1}{2} * 200 * 5^2 = 2500J.

Front

How many forms of kinetic energy are there?

Back

There are 5 forms of kinetic energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field.

Front

What happens to energy during transformations?

Back

Energy changes from one form to another but is conserved in total amount.