Work and Machines
This is what happens when force is applied over a distance.
What is work?
This does work with only one movement of the machine.
What is simple machine?
In terms of work and energy, this is what happens when a tennis racket hits a tennis ball.
What is the transfer of energy?
The Law of Conservation of Energy states that energy cannot be created or ________.
What is destroyed?
Force is measured in these units.
What are Newtons?
This affects how much work is done relative to the force applied.
What is direction?
What are the 6 types of simple machines?
This is what is called anything around which you can imagine a boundary.
What is system?
This is the sum of both the kinetic and potential energy in a system.
What is mechanical energy?
Distance is measured in these.
What are meters?
When you do work in this direction, the maximum amount of work is done.
What is parallel to the force you are using.
This is a combination of 2 or more simple machines.
What is a compound machine?
These are 4 forms of energy.
What are mechanical, electrical, chemical and radiant?
As a ball arcs through the air, gravitational potential energy does this. As the same ball gets closer to the ground the kinetic energy does this.
What is increases and decreases? (in that order)
Work is measured in these.
What are Joules?
No work is being done if the force you are using is _____ to the path you are travelling.
What is perpendicular?
Machines can increase force and increase speed. But, they cannot do this.
What is do both at the same time?
This is the type energy that is happening as a ballet dancer leaps through the air.
What is kinetic energy?
These transform electrical energy into radiant energy.
What are light bulbs?
Mass is measured in these.
What are kg?
This equals force times distance.
What is work?
These are 3 ways machines are useful.
What is increase speed, change direction of force, and increase force?
An example of this type of energy would be an apple hanging from a tree branch.
What is potential energy?
Gasoline is an example of this type of potential energy.
What is chemical potential energy?
Energy is measured in these.
What are Joules?