Terms
This is a group of parts that work together to perform a specific task.
What is a system?
The following are examples of what type of system?
Car, Factory, Human Body
What is a physical system?
This is the metric unit for mass.
What is a kilogram (kg)?
BONUS! This isn't actually a question, but a free 100 points if you are the person who chose this category!
Only the person who chose the category gets the 100 points.
This is any push or pull motion
What is force?
This is the ability to do work.
What is energy?
One of the following is not an example of a social system: school of fish, healthcare system, a crowd, family, ant colony.
A crowd is not a system.
This is the unit of measurement for weight.
What is a newton (N)?
What are the input and output for a hockey player using a stick to hit the puck?
Input: Hockey player applying force to the stick
Output: Puck moving across the ice
This is the measure of the increased force achieved by using a tool, like a simple machine.
What is mechanical advantage?
This is force that causes the movement or displacement of an object.
What is work?
This is the ability to do something without wasting energy, effort, or raw materials.
What is efficiency?
This is 9.8N/kg
What is the gravitational force on earth?
What are the input and output forces on a landscaper using a shovel?
Input: Landscaper applies force to the shovel
Output: the force of the shovel on the ground
Name three natural systems
Answers could include: solar system, the human body, a flock of birds
This is used to measure the amount of matter in an object.
What is mass?
200 N of force is applied to the pedals of a bike. If the bike has an output force of 450 N, what is the mechanical advantage of the bike?
What is a mechanical advantage of 2.25?
This is measured in joules.
What is work?
This is the mechanical advantage of an inclined plane.
The slope of the plane allows you to move a load vertically more easily.
How much work is required to lift a 20kg object 2m in the air?
392 J
This measures the amount of force of an object due to gravity (measured in newtons).
What is weight?
These are the five components of every system.
What are: Purpose, Inputs, Outputs, Components, Processes
A wagon is pulled with a force o 500 N and it moves 25 m. How much work is done?
12,500 J
This is the mechanical advantage of a pulley.
The ability to pull a load attached to a rope vertically more easily.
This is the Law of Conservation of Energy.
Energy can be neither created nor destroyed. It can only be transferred.