1. Energy

2. A Few Types of Energy 1. Mechanical 2. Chemical 3. Thermal (Heat)
4. Solar
5. Electrical
6. Nuclear
7. Sound
8. Light

3. Energy is the ability to do work
There are many forms of ENERGY
But they all fit into 2 Main Categories
Kinetic
Potential

4. Kinetic Energy KE = ½ * mass * speed²
Kinetic energy is the energy an object
has because of its motion

5. KE =mv² 2 Kinetic Energy Also written as:
KE = kinetic energy ( J )
M = mass ( kg )
V2 = velocity squared (m/s) 2

6. KE cont. KE & Mass are directly proportional If the MASS is DOUBLED,
The KE is DOUBLED.
KE & V2 are exponentially proportional
If V2 - Doubles, KE Quadruples. ( 22 = 4 )
If V2 -Triples , KE = ( 32 = 9 )
If V2- Quadruples , KE = ?

7. Gravitational P E GPE = m * g * h GPE = Fg * h
GPE = gravitational potential energy, J
m = mass, kg
g = accleration due to gravity, m/s2
h = height above reference level, m
GPE = m * g * h
GPE = Fg * h
Gravitational potential energy depends
on the weight of the body (mass and g)
and its separation from Earth

8. GPE cont. GPE = m * g * h GPE = Fg * h
GPE = gravitational potential energy, J
m = mass, kg
g = acceleration due to gravity, m/s2
h = height above reference level, m
GPE = m * g * h
GPE = Fg * h
What formula is (m x g) referencing? __________
Remember : Fg = ____
Therefore
GPE is _____x _____

9. Mechanical Energy (ME)
Energy which is possessed by an object due to its
motion OR its stored energy
ME= KE + PE
and
ME = KE + GPE + EPE