The ability to do work or cause change
What is energy?
Potential energy related to an object's height
What is gravitational potential energy?
The total kinetic and potential energy of the particles in an object
What is thermal energy?
A girl & her dog are running. The dog has a mass of 20kg. Suppose both the dog & the girl run at a speed of 2m/s. Calculate the kinetic energy of the dog
What is 40J?
This has a greater effect on an object's kinetic energy- doubling its mass or doubling its speed
What is doubling the speed?
The form of energy associated with the motion, position, or shape of an object
What is mechanical energy?
Daily Double
The energy associated with objects that can be compressed or stretched
Daily Double
What is elastic potential energy?
Daily Double
The energy of electric charges
Daily Double
What is electrical energy?
Potential energy = 12J
Kinetic energy = 10J
What is the mechanical energy?
What is 22J?
In regular bowling, the ball has a mass of 7kg. In candlepin bowling, the ball has a mass of 1kg. Does the ball with the greater mass always have the greater mechanical energy? Why?
No, it could have greater mechanical energy if it's moving fast enough
The energy an object has due to its motion
What is kinetic energy?
You could use an elevator or the stairs to lift a box to the tenth floor. Which has greater power?
Elevator
A form of energy that travels through space in waves
What is electromagnetic energy?
A girl & her dog are running. The girl has a mass of 60kg. Suppose both the dog & the girl run at a speed of 2m/s. What is the kinetic energy of the girl?
What is 120J?
Is it reasonable that for a dog with a mass of 20kg & a girl with a mass of 60kg, both running at the same speed, the girl will have more kinetic energy?
Yes, the girl has more mass
A type of potential energy that is stored in the nucleus of an atom
What is nuclear energy?
The rate at which energy is transferred, or the amount of energy transferred in unit of time
What is power?
Potential energy stored in chemical bonds
What is chemical energy?
Potential energy = 20J
Kinetic energy = 2J
What is the mechanical energy?
What is 22J?
If an object's mechanical energy is equal to it's potential energy, how much kinetic energy does the object have?
What is zero?
Energy that results from the position or shape of an object
What is potential energy?
List the vehicles in order of increasing kinetic energy
What is motorcycle, blue car, red car?
Why does the ball's gravitational potential energy increase from the time it's in the shooter's hand to now?
A girl & her dog are running. The dog has a mass of 20kg. Suppose the dog is running at a speed of 4m/s. Calculate the dog's kinetic energy
What is 160J?
What is the SI unit for the following quantities:
Force
Height
Work
Mass
Energy
What is Newton, meter, Joule, kilogram, Joule?