Work and Energy
Forms of Energy
Functions of Machines
Mechanical Advantage
Ideal Mechanical Advantage and Mechanical Advantage of less than 1.
100
The amount of effort spent when a force causes an object to move a distance.
What is work?
100

When an object is moving, the energy is called _________.

 kinetic energy.

100
The force that is applied to the machine.
What is the input force?
100
The amount by which a machine can multiply an input force
What is its mechanical advantage?
100
The mechanical advantage of a machine that has no friction is called the _________________.
What is the ideal mechanical advantage?
200
The ability to do work.
What is energy?
200
When an energy is stored (the object is not in motion), the energy is called __________.
What is potential energy?
200
The force that the machine applies to the object.
What is the output force?
200
The formula used to calculate mechanical advantage
What is MA = output force / input force In Newtons
200
The formula used to calculate the ideal mechanical advantage.
What is IMA = input distance/output distance
300
The metric unit used for energy.
What is the joule (J)?
300
When friction does work on an object, some of the object's energy is transformed into _________ energy.
What is thermal energy?
300
The potential energy of an object that is able to fall.
What is gravitational potential energy?
300
The unit used to measure force.
What are Newtons (N).
300
An example of a machine that has close to zero friction.
What is a hammer, a screwdriver.
400
During any transfer of energy, the total amount of energy remains ___________.
What is constant/the same.
400
In all situations, whenever work is done on an object, there is a change in the object's _________.
What is the object's energy.
400
The three ways in which machines make work easier.
What are: -increasing the force applied to an object -increasing the distance over which the force is applied -changing the direction of the force
400
True of false: Machines that have a mechanical advantage of 1 only change the direction between the input and the output forces.
What is True
400
True or false: in machines with an IMA of less than 1, the distance moved by the input force is less than the distance moved by the output force.
What is True.
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