A ball is thrown into the air, at it's peak height it has all _________ energy.
What is Gravitational Potential energy.
100
Stored in chemical bonds; includes food, plants, and batteries.
What is chemical energy.
100
You apply 25 N of force on an object that moves 5 meters in the same direction as the force. How much work did you do?
What is 125 J
100
Watts is the unit of...
What is power?
200
Can not be created nor destroyed only change forms
What is the law of conservation of energy?
200
A ball is thrown into the air, at the bottom it has all ________ energy
What is Kinetic Energy
200
Heat energy, the end product of many transfromations
What is Thermal energy.
200
A rock is at the top of a 20 meter tall hill. The rock has a mass of 10 kg. How much potential energy does it have?
*Use 10 m/s2 for gravity.
What is 2000 J.
200
You do 45 J of work in 3 seconds. How much power do you use.
What is 15 W
300
How fast you do work
What is power?
300
If no work is done, the ______ energy equals the _____ energy.
What is intial and final
300
Energy from radiation, fission, or fusion. Makes huge amounts of energy
What is Nuclear Energy.
300
A 8 kg cat is running 4 m/s. How much kinetic energy does it have?
What is 64 J.
300
In the real world not all energy transfers are really 100% efficient, this is due to _______
What is Friction.
400
Energy of Position
What is potential energy?
400
A ball thrown into the air keeps all of its energy. Its energy is constantly being _________
What is transformed.
400
Energy from moving electrons; what we generally think of as energy.
What is Electrical Energy.
400
A 3 kg object compresses a spring 0.6m, giving it 8.1 J of EPE, what is the spring constant?
What is 45 N/m
400
An object is against a compressed spring. The spring is released and pushes the object, but the object rubs against the ground. The "work in" is EPE. The "work out" is _____.
What is Kinetic Energy.
500
Energy due to motion
What is kinetic Energy
500
A ball it thrown into the air, midway through its flight what type(s) of energy does it have.
What is GPE and KE.
500
Light energy; energy from the sun.
What is Radiant energy.
500
A 8 kg mass going 2m/s compresses a spring 0.5 m. Find the spring constant of the spring.
What is 128 N/m
500
A 3 kg object falls off an 8 m tall ledge. Due to friction it is only going 11 m/s at the ground. Calculate the efficiency.