Show:
Laws
Simple Machines
Terms and Definitions
Forces
True or False
100
Newton's first law is
Inertia
100
A wheel that uses a rope to change the direction of a force on an object
What is a pully
100
A push or a pull on an object
What is a force
100
A force with a net force of zero
What is a balanced force
100
momentum is the product of the mass and velocity of an object
True
200
Newton's second law is
Accelertion
200
Two wheels with a rod in the middle that connects them and allows easy movement
What is a wheel and axel
200
A change in velocity over time
What is acceleration
200
The force that slows down objects when they rub against each other
What is friction
200
An inclined plane is used often used to load trucks
True
300
Newton's second law is
Action and Reaction
300
A ramp
What is an inclined plane
300
Speed and direction
What is velocity
300
A force of the attraction between two objects
What is gravitational force
300
Simple machines have lots of moving parts
False
400
Greater mass equals
Greater inertia
400
An inclined plane wrapped around a pole
What is a screw
400
A measure of how hard it is to slow down or stop an object
What is momentum
400
A force that is unequal and doesn't have a net force of zero
What is an unbalanced force
400
For every action there is NOT an equal and opposite raection
False
500
What is needed to set objects in motion
Forces or a force
500
Two ramps (or inclined planes) back to back
What is a wedge
500
A measure of the distance an object moves in a given amount of time
What is speed
500
When forces are balanced there is a
Net force of zero
500
Some objects are in motion even if you can't see them
True