THE BASICS
Energy - Exists in different forms and have the ability to do work.
The easiest form of work to visualize is mechanical work, which is
the energy required to move an object a distance d when opposed
by a force F.
Figure 1. Illustration of Work Done: A person pushing a rectangular
block with a force applied horizontally.
What happens is that the force is transferring energy to the object,
so energy have the ability to do work.
W = F*d
Where:
W - Work done by the force
F - Is the applied force
d - Is the displacement caused by the force
Two common types of energy
Kinetic Energy - Anything that is moving has kinetic
energy. It is basically the energy motion.
Example: A moving car or a moving ball has a kinetic
energy.
Formula:
Where:
m stands for mass
v stands velocity
Potential Energy - A stored energy due to its relative
position.
Example: When a book is placed on a high shelf, it has
potential energy due to its elevated position relative to
the ground.
Formula: PE = mgh
Where:
m stands for mass
g is the gravitational constant, 9.81
h is the height
, THE BASICS
The Law of Conservation of Energy - It says that energy is
neither created nor destroyed. It can only be transformed from one
system to another.
To understand this, let us use the example previously.
Figure 2: A girl dropping a basketball, illustrating the conversion of
potential energy to kinetic energy.
On the left side, the girl stands on an elevated platform with the
basketball at rest in her hands. The potential energy is being stored
due to its height above the ground.
On the right side of the image, the girl releases the basketball,
causing it to fall. As the basketball descends, its potential energy is
converted into kinetic energy since the ball is now moving, it has
kinetic energy. As it hits the ground, all the potential energy is
converted to kinetic energy.
It’s not that the potential energy is destroyed, it simply transformed
into kinetic energy—Law of Conservation of Energy.
Checklist:
Energy have the ability to do work. Work is the energy transferred
to or from an object via the application of force along a
displacement. Energy have various forms include common types
are potential and kinetic energy. Potential energy is stored energy
relative to a position while kinetic energy is associated with
motion. According to the Law of Conservation of Energy, energy
cannot be created or destroyed; instead, it transforms from one
form to another.
Energy - Exists in different forms and have the ability to do work.
The easiest form of work to visualize is mechanical work, which is
the energy required to move an object a distance d when opposed
by a force F.
Figure 1. Illustration of Work Done: A person pushing a rectangular
block with a force applied horizontally.
What happens is that the force is transferring energy to the object,
so energy have the ability to do work.
W = F*d
Where:
W - Work done by the force
F - Is the applied force
d - Is the displacement caused by the force
Two common types of energy
Kinetic Energy - Anything that is moving has kinetic
energy. It is basically the energy motion.
Example: A moving car or a moving ball has a kinetic
energy.
Formula:
Where:
m stands for mass
v stands velocity
Potential Energy - A stored energy due to its relative
position.
Example: When a book is placed on a high shelf, it has
potential energy due to its elevated position relative to
the ground.
Formula: PE = mgh
Where:
m stands for mass
g is the gravitational constant, 9.81
h is the height
, THE BASICS
The Law of Conservation of Energy - It says that energy is
neither created nor destroyed. It can only be transformed from one
system to another.
To understand this, let us use the example previously.
Figure 2: A girl dropping a basketball, illustrating the conversion of
potential energy to kinetic energy.
On the left side, the girl stands on an elevated platform with the
basketball at rest in her hands. The potential energy is being stored
due to its height above the ground.
On the right side of the image, the girl releases the basketball,
causing it to fall. As the basketball descends, its potential energy is
converted into kinetic energy since the ball is now moving, it has
kinetic energy. As it hits the ground, all the potential energy is
converted to kinetic energy.
It’s not that the potential energy is destroyed, it simply transformed
into kinetic energy—Law of Conservation of Energy.
Checklist:
Energy have the ability to do work. Work is the energy transferred
to or from an object via the application of force along a
displacement. Energy have various forms include common types
are potential and kinetic energy. Potential energy is stored energy
relative to a position while kinetic energy is associated with
motion. According to the Law of Conservation of Energy, energy
cannot be created or destroyed; instead, it transforms from one
form to another.
