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Work
Force
Machines
Definitions
Potpourri
100
Define energy.
What is the ability to do work?
100
This is the unit of measurement for force
What is Newtons?
100
Machines defined?
What is a mechanical system that reduces the required to accomplish work?
100

The push or pull on an object is called....

force

100
When calculating for force, what unit is distance measured in?
What is metres?
200
To calculate for work, you need this equation.
What is Work = Force x distance
200

The force that opposes the relative motion of an object is called...

friction

200
Name 2 of the 3 ways a machine makes work easier.
What is increasing the force, distance, or changing direction?
200
Energy of an object in motion.
What is kinetic energy?
200
The unit for energy.
What is Joules?
300

The concept that energy cannot be created or destroyed is called

Law of Conservation of Energy

300
This type of force must touch the object that they push or pull.
What is a contact force?
300

When several different machines work together, this is called....

mechanism

300
Amount of effort expended when a force causes an object to move a distance and energy is transferred.
What is work?
300

Magnets repelling each other is a good example of this kind of force.

What is action at a distance force?

400
Work done if an object is pushed 5m with a force of 8N.
What is 40J?
400
Another name for a Newton Gauge?
What is a spring scale?
400
The following equations is used to measure.... MA = Fout / Fin
What is mechanical advantage?
400
A group of physical parts that interact with each other an function as a whole in order to complete a task.
What is a mechanical system?
400

The scientist responsible for determining the formula for power was James Watt. What was his job?

Steam Engineer

500
The work done if an object that is lifted 3m off the floor and has a mass of 6kg.
What is 176.4J.
500
The weight of an object on Earth if it has a mass of 23kg.
What is 225.4N.
500
Name 3 of the 6 simple machines
What is lever, wheel and axle, pulley, inclined plane, screw, wedge?
500

Newton has three laws. Name two of them

Object is motion stays in motion, an object at rest stays at rest unless acted upon by a force

Force = mass x acceleration

For every action there is an equal and opposite reaction


500
These two terms are often confused for one another. One is due to gravity, the other is the amount of matter in an object.
What is mass and weight?