1. KINETIC AND POTENTIAL ENERGY
BY: JESSA PAMONAG

2.  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!

3.  is NEVER created or destroyed!
 can only be STORED or TRANSFERRED.

4. Batteries store energy!
This car
uses a
lot of
energy
We get
our
energy
from
FOOD!
Even this
sleeping
puppy is
using
stored
energy.

5. Remember:
ALL matter is made up
of particles.
The particles NEVER
stop moving.

6. All Energy
Potential
Energy
Kinetic
Energy

7.  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.

8. PE = mgh
(Potential Energy = mass x
gravity x height)

9. 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.

10.  The energy of a moving object.
 "Kinetic" means movement!
 When stored energy is being used up, it is
making things move or happen.

12. KE =
½mv²
(Kinetic Energy = ½ (mass)
(velocity)²
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13. 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.
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15. OTHER KINDS OF ENERGY..

16. Kinetic
Energy
All Energy
Potential
Energy
Gravitation
Potential
Energy
Elastic
Potential
Energy
Chemical
Potential
Energy

17. o Potential energy due
to an object’s position
o P.E. = mass x
height x gravity
Don’t look
down, Rover!
Good boy!

18. o Potential energy due compression or
expansion of an elastic object.
Notice the ball compressing
and expanding

19. o Potential energy
stored within the
chemical bonds of an
object