Kinetic Energy
What is kinetic energy?
Energy in motion, moving energy
What is potential energy?
stored energy
What is work?
Work = Force x Distance
When energy changes from one form to another.
Energy transfer
A simple machine with no moving parts that is a straight slanted surface.
Inclined Plane
What physical quantities does kinetic energy depend on?
Mass and Speed
What physical quantities does potential energy depend on?
Mass and Height
What is the unit for work?
Joules
A solar panel converts light energy into...
Electrical
A simple machine that is thick on one end and tampers down to a smaller edge.
Wedge
As _________ decreases, kinetic energy decreases.
Mass or Speed
As speed increases, potential energy ________________.
decreases
William used 65N to run a 50m dash. How much work did he do?
3,250 J
Shooting an arrow from a bow coverts ______________ into kinetic energy.
Potential energy
A simple machine that makes lifting something heavy easy to lift by distributing the weight.
A pulley
Where would a car traveling on a roller coaster have the most kinetic energy?
When its going down the tallest hill
Where does a car on a hill have the most potential energy?
Top of the hill
You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser?
54 J
A wind farm converts _____________ energy into _______________ energy.
kinetic; electrical
A simple machine that makes rotational motion to move forward.
Screw
Would you have more kinetic energy if you are traveling fast or slow?
Fast
Mrs. Bush had a kitchen cabinet with three shelves in it. On the top shelf Mrs. Bush had short glasses, on the middle shelf she had large glasses, and on the bottom shelf she had plates. Which item has the most potential energy?
short glasses
If you push a cart with a force of 60 N resulting in 120 J of work.. how far did you move the cart?
2 meters
A battery charger converts _________________ energy into _________________ energy.
electrical; chemical
_____________ and ___________ energies are always transferred between machines.
Thermal and Mechanical energies