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Minute Minder #5 Batman is trying to catch a
woman that fell off a building. Her velocity is 30m/s. Batman only has 1/3 second to catch the woman before she hits the ground. The woman weighs 75Kg. Batman does a one handed catch. What is the force exerted on his arm.
(hint. Solve for average acceleration. Then solve for force.)
TYPES OF ENERGY
• Mechanical• Thermal• Chemical• Electrical• Electromagnetic• Nuclear
What is Mechanical Energy?o Energy due to a object’s motion
(kinetic) or position (potential).
The bowling ball has mechanical energy.
When the ball strikes the pins, mechanical energy is transferred
to the pins!
Examples:
Examples of Mechanical Energy
Thermal Energy
o The total energy of the particles in an object.
o Heat energy
A hot object is one whose atoms and molecules are excited and show
rapid movement.
A cooler object's molecules and atoms will show less movement.
Examples:
Chemical Energy
o Potential energy
stored in chemical bonds that hold
chemical compounds together.
The chemical bonds in a matchstick store
energy that is transformed into
thermal energy when the match is struck.
Examples:
Examples of Chemical Energy
Electrical Energy
The energy of moving electric
charges.o Easily transported
through power lines and converted into other forms of
energy
Examples:
Electromagnetic Energy
The energy of light and other forms of radiation. (waves)
Examples:
Nuclear Energy
The potential energy stored in the nucleus of the atom.Fusion – is the joining together of atoms, (sun)Fission – is the splitting of an atom. (nuke, nuclear plants)
Examples:
QUIZ TIME!What type of energy cooks food in a microwave oven?
What type of energy is the spinning plate inside of a microwave oven?
QUIZ TIME!Electrical energy is transported to your house through power lines.
When you plug an electric fan to a power outlet, electrical energy is transform into what type of energy?
QUIZ TIME!
What energy transformation occurs
when an electric lamp is turned on?
ELECTRICAL ENERGY
What types of energy are shown below?
What type of energy is shown below?
What types of energy are shown below?
Electrical, Mechanical andElectromagnetic Energy
What type of energy is shown below?
What type of energy is shown below?
Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving. You should have 5 different types of energy.
Energy Transfer
Chemical
Electrical
Electrical
Electrical
Sound(mechanical)
Light(Electromagnetic)
ThermalMechanical
