Types of Energy
The ability to do work or cause change
What is energy?
Energy of motion
What is kinetic energy?
Force that opposes motion
What is friction?
Make work easier
What do machines do?
Energy stored in a slingshot
What is elastic potential energy?
Stored energy
What is potential energy?
These are used to make work easier
What is machines?
work divided by distance equals __ with the unit of __
What is force, Newton?
A seesaw, a hammer, a crowbar, a light switch are examples of this type of simple machine
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 unit of mechanical advantage
What is there isn't a unit?
Amount of work done when 4 Newtons of force is applied to a 400 kilogram object
What is no work?
If the effort force is ___________than the resistance force, the machine makes work easier.
What is less than?
A battery 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, part when potential energy is increasing and kinetic energy is decreasing.
What is the time when the ball is thrown up into the air?
Amount of work done in 1 second
What is power?
True or false ....a machine will increase the amount of work that gets done
What is FALSE?
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?
Kinetic energy of a 10 kilogram rock falling at a rate of 3 meters/sec.
What is 45 Joules?
The unit of mass
What is kilogram?
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?