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Work
Power
Energy
Simple Machines
Efficiency
100
Moving an object
What is doing work?
100
The rate at which work is done
What is Power?
100
Energy can not be created nor destroyed.
What is the Law of Conservation of Energy?
100
Simple lever, the pulley, the wheel and axle, the simple inclined plane, the wedge, and the screw.
What are simple Machines?
100
an impossible efficiency for any machine.
What is 100%
200
The work is Zero
What is the work of an object that is not moving?
200
Watts
What is unit used to measure Power?
200
The ability to do work
What is Energy?
200
The steering wheel of a car is this type of simple machine
What is a wheel and axle?
200
Keeps us from achieving perfect efficiency in a machine.
What is friction?
300
Force X Distance
How do you calculate work?
300
Work/Time
What is the Power Equation?
300
Energy with regards to position
What is Potential Energy?
300
The bike is made of these three simple machines
what is a wheel an axle, lever, and pulley?
300
=(Wout/Win)*100
What is the formula for efficiency?
400
an object acts against a force of 68N over 12 meters. Its work is___.
What is 816 joules?
400
A 48 kg man climbs a 12 meter in ladder in 42 seconds. The power he used was___.
What is 134 Watts?
400
The kinetic energy of a 7kg object moving 12m/s
What is 504 joules?
400
The advantage machines provide to make work easier.
What is mechanical advantage?
400
A man puts in 800 joules of work walking and gets 320 joules out. His efficiency is_____.
What is 40%?
500
An object does 88 joules of work moving 4 meters upwards. The mass of this object is____.
What is 2.24 kg?
500
A truck uses 15,000 watts doing 50,000 joules of work. The time it takes the truck to do this work is____.
What is what is 3.33 seconds?
500
The sum of potential and kinetic energy in a system
What is mechanical energy?
500
The way in which machines make work easier
What is increasing distance and decreasing force?
500
A person bikes with an efficiency of 38% and gets out a total of 70 joules of work. The amount of work put in was_____.
What is 184 joules?