Copy of Copy of Concept 1 Notes - Nature of Energy

What is the definition of energy?

Energy is the ability to cause change.

In what units is energy measured?

Energy is measured in Joules (J).

What is kinetic energy?

Kinetic Energy (KE) is the energy in motion and is calculated using the formula KE = ½ mv².

If a jogger has a mass of 60 kg and is moving at 3.0 m/s, what is their kinetic energy?

The jogger’s kinetic energy is 270 J.

What are the three types of potential energy?

The three types of potential energy are elastic, chemical, and gravitational potential energy.

What is gravitational potential energy (GPE)?

Gravitational Potential Energy (GPE) is the energy stored in objects that are above Earth’s surface, calculated using the formula GPE = ham.

What is the formula for calculating gravitational potential energy?

GPE = ham, where h is height in meters, a is acceleration due to gravity in m/s², and m is mass in kg.

How do you calculate kinetic energy?

Kinetic Energy (KE) is calculated using KE = ½ mv², where m is mass in kg and v is velocity in m/s.

If a stone has 390 J of energy and is moving at 12 m/s, how do you find its mass?

Use the formula m = 2KE/v² to find the mass.

What type of potential energy is stored in a bow and arrow?

The potential energy stored in a bow and arrow is called elastic potential energy.