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What is a physical system?

• A group of parts that function together to perform a specific task

• A group of components that work together to perform a function

• A device that requires a single force to work

• A group of people joining together to perform tasks

What is the force that resists the movement of objects sliding or rolling over one another?

• Compressive force

• Frictional force

• Rotational force

• Tensile force

What is the unintended or undesired output of a system called?

• Input

• Output

• Side Effects

• Subsystem

What is the force that holds a motionless object where it is, preventing it from being moved across another object's surface?

• Rotational force

• Compressive force

• Tensile force

• Frictional force

What is the purpose of machines? 

• To recapture lost energy of prevent energy from escaping in the first place
• To reduce the amount of friction between two sliding parts
• To measure of how strong force is
• To help us use energy more efficiently/ do work easier. 

What is not an input for a car?

• Applying force on the gas pedal 
• Movement 
• Turning the steering wheel 
• Gasoline

What is friction? 

• The force that resists motion between two objects in contact
• The mechanical advantage in a “perfect” world
• The moment when a specific technological shift hits mainstream society
• A substance that helps parts of a system work efficiently 

____________ is a push or pull on an object.

• Motion
• Force 
• Speed
• Velocity

Which is an example of a social system?

• A can opener

• A PS4

• An airplane

• A police force

What is a system?

• The fixed point at which a lever pivots.
• A group of parts that work together to perform a function.
• A push or pull on an object that may result in a change in the object’s motion or shape
• Unintended or undesirable outputs