Potential Energy
Define potential energy.
The energy of position.
The ability to make things happen/cause change.
Which critical force was missing from the simulation we completed as a class?
Friction.
Define kinetic energy.
The energy of motion.
A sled sitting on top of the hill is an example of...
potential energy.
Give an example of potential energy.
TD.
What are the names of Dr. Jeff's two assistants and what are they responsible for at the end of every episode?
Careers with Caroline
Do It Yourself with Adam
Where on the ramp did the skater have the most kinetic energy.
Right before the bottom.
Give an example of kinetic energy.
TD.
A speeding car is an example of...
kinetic energy.
Chemical bonds "store" energy.
True or False?
False.
It takes energy to break and make them.
What are three things the Dr. Jeff used to demonstrate the exchange between potential and kinetic energy?
Rollercoaster, hammer and nail, mic drop, rail gun...
Potential energy minus kinetic energy always equals the total energy of an event.
Truce or False?
False.
They are added together.
Which two variables have the most effect on kinetic energy?
Mass and speed.
When you draw a bow, you are creating...
elastic potential energy.
Which two variables have the most effect on potential enegry?
Mass and position/height.
A rail gun can travel at speeds up to...
6,000 mph
What variable remains constant even if you increased or decreased the mass of the skater?
The speed.
Explain how two moving objects can have the same amount of kinetic energy, but have different masses.
The smaller object must be traveling at a higher speed.
If you drop a quarter from a bridge into a river, at which point does the quarter have the most total energy?
Its total energy does not change.
What is the formula for calculating potential energy?
PE = mass x gravity x height in meters
Name five different fields/professions in which understanding kinetic and potential energy is highly important.
Amusement Parks, Engineering, Sports Equipment, Biotechnology, Auto Industry...
Explain what happens to the different types of energy demonstrated in the sim.
What is the formula for calculating kinetic energy?
KE = 1/2mv2
If two balls rolling down a hill have the same amount of kinetic energy, but one ball has more mass than the other, what can we say about the speed of the balls?
The smaller ball must be moving faster than the ball with more mass if they have the same kinetic energy.