Kinetic Energy
Kinetic energy deals with the ___________ of an object.
Movement
Potential energy deals with the ___________ of an object.
Position
Name this type of energy: a battery
Chemical
Energy cannot be created, nor destroyed. This is the law of...
conservation of energy
Is velocity (in m/s) a scalar or vector quantity?
Vector
What is the equation to calculate kinetic energy?
KE = 1/2mv2
What is the equation to calculate potential energy?
PE = mgh
Name this type of energy: power lines
Electrical
Energy can 'escape' a system through ________?
Friction or heat.
_____ friction exists between two objects that are not sliding. _______ friction exists between to objects that ARE sliding.
Static...Kinetic
In the system of a rollercoaster, where on the hill is the kinetic energy the highest?
At the bottom of a hill / when the rollercoaster cars are going the fastest.
If a ball has 100 joules of potential energy at the top of a 10 m hill and rolls down (ignoring friction, g = 9.8 m/s^2), how much kinetic energy will it have at the bottom of the hill? _____
100 Joules
Name the energy produced by headphones
sound
Name the energy transformation: Burning wood in a fireplace
Chemical to thermal (or light)
What is the pathway of a projectile's motion called?
Trajectory
Calculate the kinetic energy of a rollercoaster car going 30 m/s with a mass of 4500 kg.
2,025,000 J
Calculate the potential energy of a rollercoaster car that has a mass of 4500 kg and it sitting at the top of a 100 meter drop.
4,410,000 J
Name this type of energy: gamma rays
Electromagnetic
Name the energy transformation: photosynthesis
Light to Chemical
Which angle of launch will lead the the farthest range of a projectile?
45 degrees
Calculate the velocity of a rollercoaster car that has a kinetic energy of 1,000,000 J and has a mass of 4500 kg.
21 m/s
Calculate the mass of a rollercoaster car that has the potential energy of 2,000,000 J on a 50 meter hill.
4,081 kg
BONUS QUESTION: Name ANY of the following: Mr. Teuber's cat, dog, or girlfriend. Ms. Kitzis' 2 cats or boyfriend.
Ace, Beanz, Friday, Buckey, Mike, Karah
Bonus Question: What school did Mr. Teuber USED to teach at?
Ribault
A boulder weighs 10 kg. It is 5 m in diameter. it is on a surface with a coefficent of static friction of .01. It is orange. It is moving at 1 m/s. It is accelerating at 0 m/s^2. What is it's momentum?
10 kg m/s