KE/PE
Mechanical Energy
What is Energy?
Other Forms of Energy
Random
100
What is the difference between kinetic and potential energy?
Kinetic: Energy of motion
Potential: Stored energy
100
Mechanical energy is..
the total of kinetic and potential energy of an object
100
If an object’s KE is 6 J and its PE is 4 J, what is its ME?
10 J
100
Energy stored in food is this type of energy.
Chemical Energy
100
Mechanical Energy = ___ + ___.
KE + PE
200
As a ball rolls downhill, its potential energy ______ while its kinetic energy ______.
decreases; increases
200
Halfway down a hill, a ball has 18 J of KE and 12 J of PE. What is its mechanical energy?
30 J
200
What is the formula for potential energy?
m x g x h
(mass x gravity x height)
200
Sunlight used in photosynthesis is this type of energy.
Electromagnetic energy (radiant)
200
What was the word of the day 2/05/2026?
Commiserate
300
On a roller coaster, where is potential energy greatest and where is kinetic energy greatest?
PE at the highest point and KE at the lowest point
300
Mechanical energy is the energy an object has because of its...
motion, position, shape (or combo of these)
300
A falling egg has 2.3 J of mechanical energy and 0.5 J of kinetic energy. How much potential energy does it have?
1.8 J
300
The energy that powers a lamp through moving electrons is called what?
Electrical energy
300
Doing work requires a force and what else?
Motion
400
Name two factors that affect gravitational potential energy.
mass and height
400
If friction is ignored, mechanical energy during motion will stay the same. This is an example of what law?
Law of Conservation of Energy
400
A ball at rest at the top of a hill has 30 J of mechanical energy. How much kinetic energy does it have?
0 J
400
The energy released in the Sun through fusion reactions.
Nuclear Energy
400
When is Mr. Anderson's birthday??
February 13th
500
A skateboarder pauses at the top of a ramp before dropping in. At that exact moment, which type of energy is greatest, and why?
Potential energy, because the skateboarder is at their highest point and not moving.
500
Mechanical energy is best described as the total energy of an object due to its __________ and __________.
Motion (KE) and Position (PE)
500
In order for energy to transfer by work, what two things must occur?
A force and motion in the direction of the force
500
Which form of energy is stored in food and released when your body breaks it down during digestion?
Chemical Energy
500
When energy changes from one form to another—like electrical energy turning into light and heat in a light bulb—this process....
Energy transformation