Show:
Force and Energy
Kinetic & Potential Energy
Friction
Calculating Work and Power
Simple Machines
100
a push or a pull
What is force?
100
Energy of motion
What is kinetic energy?
100
Force that opposes motion
What is friction?
100
force times distance
What is the formula to calculate work?
100
Make work easier
What do machines do?
200
equation for force
What is f=ma
200
Stored energy
What is potential energy?
200
The opposite direction from the direction of the motion
What is the direction of the force of friction?
200
work divided by distance
What is force?
200
A seesaw, a hammer, a crowbar, a light switch
What is a lever?
300
Energy can only be converted from one form to another; it cannot be destroyed or created.
What is The Law of Conservation of Energy?
300
Kind of energy that increases as an object moves faster and faster.
What is kinetic energy?
300
Heat
What is the energy that is produced by friction?
300
Amount of work done when 4 Newtons of force is applied to a 400 kilogram object
What is no work?
300
If the effort force is ___________than the resistance force, the machine makes work easier.
What is less than?
400
The ability to do work or cause change
What is energy?
400
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?
400
When an object moves through outer space
What is an example of friction-less motion?
400
Amount of work done in 1 second
What is power?
400
Increase the amount of work that gets done
What is it that machines CANNOT do?
500
A big rock has a mass of 3000kg if it is lifted and dropped with what force will it hit the ground?
What is 29,400 Newtons?
500
Kinetic energy of a 10 kilogram rock falling at a rate of 3 meters/sec.
What is 45 Joules?
500
When swinging objects slow down and stop, they appear to be doing this, but it is really due to friction.
What is breaking the Law of Conservation of Energy?
500
Amount of time it takes to do 500 Joules of work using 5 watts of power
What is 100 seconds?
500
The six kinds of simple machines
What are lever, pulley, screw, wedge, inclined plane, wheel & axle?