C
What is energy?
The ability to do work
What is Kinetic Energy
Energy of motion
What kind of simple machine is two inclined planes used for splitting.
A wedge
What type of lever has the effort in the middle?
When is Ms Chang's Birthday
January 3rd
What is potential energy?
Stored energy
As potential energy decreases, kinetic energy ________
Increases
What is the formula for work?
W= Fd
What type of energy is Nuclear Energy
Potential Energy
If you are riding a roller coaster what form of energy increases as you go up the roller coaster?
Potential energy
What unit is energy measured in?
Joules (J)
A rigid bar that balances on a fixed point called a _____________
Fulcrum
What is the formula for force
F=W/d
What type lever has the load in the middle
Class 2 Lever
Describe what happens to potential and kinetic energy as a ball rolls down a hill
As the ball rolls down the hill, kinetic energy increases as potential energy decreases
What is energy transformation
When one form of energy converts into another form
A 440lb truck and a 300lb car are speeding down a hill, which has more kinetic energy and why?
The truck has more mass and therefore more kinetic energy
The winning Tug O’ War team pulls with 5,000 N of force. They pull the other team 10 m in order to win. How much work did they do?
W= 500 Joules
Give me two different examples of levers
Answers may vary
Ex. Scissors and Tweezers
It takes 240 J of work to push a dolly up a ramp for 6 m. How much force was applied?
F= 40 N
F= ?, d= 18 m, W= 54 J
3N
Name the 6 simple machines
Pulley, Lever, Wheel and Axle, Screw, Inclined Plane, Wedge
Simple machines make ____________ easier by changing the size or _____________ of force.
Work, direction
Answers may vary