Week 5 – Lesson 2 (Mechanical Energy)

Grade: 5 
Subject: Science
Date: November 2020
Topic: Mechanical Energy

Mechanical energy is a form of energy. It is all the energy that an object has because of its

motion and its position. All living things and all machines use mechanical energy to do work.

WHAT IS POTENTIAL AND KINECTIC ENERGY?
Mechanical energy is the moving energy (kinetic energy) of an object plus that object's stored 
energy (potential energy). 
The mechanical energy of the pendulum toy shown here includes the kinetic energy of the balls 
in motion plus the potential energy of the balls that are still.
The pendulum below demonstrates this concept.

For a in-depth look into Kinetic energy and Potential energy watch the video below

Take a look at the video below

Activity
Complete the following:
1. Define mechanical energy.
2. Give an example of an object with Potential mechanical energy; Give an example of an
object with Kinetic mechanical energy.
3. Compare and contrast potential mechanical energy and kinetic mechanical energy.