Types of Energy
The ability to do work or cause change
What is energy?
Energy of motion
What is kinetic energy?
The units of power
What is watts?
force x distance
What is the formula to calculate work?
an unpowered mechanical devices that accomplishes a task with only one movement
What are simple machines?
Energy stored in a slingshot
What is potential energy?
An apple in a tree has this...
What is potential energy?
Applying a force of 1 Newton over a distance of 1 meter
What is 1 joule?
work / time
What is power?
A seesaw, a hammer, a crowbar, a light switch
What is a lever?
Energy can only be converted from one form to another; it cannot be destroyed or created.
What is The Law of Conservation of Energy?
Kind of energy that increases as an object moves faster and faster.
What is kinetic energy?
The energy produced by friction
What is heat?
Amount of work done when 50 Newtons of force are used to pull a cart 20 meters
What is 1000 joules?
The ____________work of a simple machine can never be greater than the __________ work
What is output , input?
The three forms of energy to go from a battery that is used to light a lightbulb.
What is chemical potential energy to electrical energy to radiant (light) energy?
For a ball tossed into the air between two people, the part of the arc of motion when potential energy is increasing and kinetic energy is decreasing.
What is the time when the ball is thrown up into the air?
A perfect machine would have this efficiency
What is 100%?
work output / work input
What is efficiency?
The MA of a ramp is given by
What is ramp length/ramp height?
A big rock that has 20,000 Joules of gravitational potential energy when it is 10 meters off the ground has this weight.
What is 2,000 Newtons?
In our pulley lab, the greater the mechanical advantage, the ___________ the input distance needed to lift the lower block.
What is "greater"?
A group of objects, effects and variables that are related.
What is a system?
Amount of time it takes to do 500 Joules of work using 5 watts of power
What is 100 seconds?
The six kinds of simple machines
What are lever, pulley, screw, wedge, inclined plane, wheel & axle?