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What is Energy?
Energy Transformations
Conservation and Forms of Energy
Work
Efficiency and Power
100
Unit of energy
What is Joule (J)
100
a height of 20 ft has more potential energy than 10 ft... True or False?
What is True
100
Energy can never be created nor destroyed
What is Law of Conservation of Energy
100
form of energy that comes from force applied over a distance
What is Work
100
Unit of Power
What is Watt
200
Energy of Motion
What is Kinetic Energy
200
Chemical energy is stored in food... True or False?
What is True
200
Energy is used up and then disappears... True or False?
What is False
200
work or energy supplied to the process
What is Work Input
200
Unit of power equal to 746 watts
What is horsepower
300
EP = mgh
What is Potential Energy
300
Energy that is transformed from one form to another is called?
What is Conservation of Energy
300
Explain Potential and Kinetic energy
What is Potential: energy stored, Kinetic: energy of motion
300
Work or energy that comes out of the process
What is Work Output
300
RATE of doing work
What is Power
400
Form of energy stored in molecules
What is Chemical Energy
400
EK = ½ mv2
What is Kinetic Energy
400
A 4.5 kg object travels up an incline with speed equal to 3.0 m/s what height does the object reach before it stops?
What is 0.46 m
400
W= (F)(d)
What is Work
400
What is the power needed to do 365 J of work in 5.7 s?
What is 64 watts
500
a 2 kg rock has a velocity of 14 m/s, what is the Kinetic Energy?
What is 196 J
500
a 2 kg rock is at a height of 20 m what is the potential energy?
What is 196 J
500
A 4.5 kg object travels up an incline with speed equal to 3.0 m/s. what is the Potential Energy?
What is 20.29 J
500
How much work is done by a person who pulls a cart with a force of 50 newtons if the cart moves 20 meters in the direction of the force?
What is 1000 J
500
P= w/t
What is Power