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KINETIC AND POTENTIAL ENERGY
BY: JESSA PAMONAG
 Energy is the ability to do work.
 All energy can be classified as either
 __________ or____________
◦ measured in Joules (J)
◦ 1 Joule = 1 Nm
 Everything that happens in the world uses energy!
 Most of the time we can’t see energy, but it is
everywhere around us!
 is NEVER created or destroyed!
 can only be STORED or TRANSFERRED.
Batteries store energy!
This car
uses a
lot of
energy
We get
our
energy
from
FOOD!
Even this
sleeping
puppy is
using
stored
energy.
Remember:
ALL matter is made up
of particles.
The particles NEVER
stop moving.
All Energy
Potential
Energy
Kinetic
Energy
 The energy stored in an object.
 "Potential" simply means the energy has the
ability to do something useful later on.
 Potential energy exists whenever an object
which has mass has a position within a force
field.
PE = mgh
(Potential Energy = mass x
gravity x height)
Calculate the work done by a 50 – kg nurse in
lifting 25 – kg child, 0.50 m on the table.
both the child and her own weight.
*Suppose her center of gravity also rises about
0.50 m.
 The energy of a moving object.
 "Kinetic" means movement!
 When stored energy is being used up, it is
making things move or happen.
KE =
½mv²
(Kinetic Energy = ½ (mass)
(velocity)²
www.makemegenius.com
Free Science Videos for Kids
How much energy is required to accelerate a
1000 – kg from rest to 30 m/sec, assuming
no friction ?
*Since the car is on level ground and frictions
neglected, all of the energy used to accelerate
the car goes into energy of motion.
www.makemegenius.com
Free Science Videos for Kids
OTHER KINDS OF ENERGY..
Kinetic
Energy
All Energy
Potential
Energy
Gravitation
Potential
Energy
Elastic
Potential
Energy
Chemical
Potential
Energy
o Potential energy due
to an object’s position
o P.E. = mass x
height x gravity
Don’t look
down, Rover!
Good boy!
o Potential energy due compression or
expansion of an elastic object.
Notice the ball compressing
and expanding
o Potential energy
stored within the
chemical bonds of an
object

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2.1 energy