Forces
Motion resulting from force
Work
Rebounding force created by the compression or stretching of a spring when attached to an object
Spring force
Field of influence around a source of noncontact force
Force field
Graph which represents the motion of an object over a period of time
Motion graph
Part of a lever from the fulcrum to the input
Input lever
Person who uses science to develop technology
Engineer
Change in position
Motion
Matter that has no definite shape and can flow; liquid or gas
Fluid
Amount of space covering an object
Surface area
To turn, like on a hinge
Pivot
Forces of two objects acting upon one another by direct contact
Contact forces
Pulling force created between a rope or cable and an object
Tension force
Attractive or repulsive force caused by the polarity of magnetism
Magnetic force
Law stating that for every action there is an equal and opposite reaction
Third law of motion
Part of a lever from the fulcrum to the output
Output arm
Science put to practical use
Technology
Push or pull on an object
Force
Measure of distance traveled divided by a unit of time
Speed
Two objects bumping into each other causing energy transfers
Collision
Object lifted or moved by a machine
Load
Forces acting without direct contact
Noncontact forces
Supportive force of a surface toward an object resting on it
Normal force
Having two opposite sides that work differently to create a force field
Polarity
Law stating that an object's acceleration is determined by the forces acting upon it a well as its mass
Second law of motion
Increase of force made possible by a machine
Mechanical advantage
Characteristics a design must have to function
Criteria
Change in motion to a faster rate
Positive acceleration
Change of speed, direction, or both
Acceleration
Equal force in the opposite direction of the action force
Reaction force
Process used by engineers to develop technology
Engineering design process
Opposing forces that prevent work from being done
Balanced forces
Resisting force between two objects rubbing against one another; works against motion
Frictional force
Attractive or repulsive force caused by the polarity of electric charges
Electric force
Unit of force
Newton (N)
Force applied to a machine
Input
Limitation or boundary for the design process
Change in motion to a slower rate
Negative acceleration
Force applied to an object, pushing or pulling it
Action force
Science of shaping objects to allow the smooth flow of fluids around them and reduce drag
Streamlining
Reaction force created by differences in air pressure around a foil
Lift
A greater force overcomes opposing forces, resulting in work
Unbalanced forces
Friction between a solid object and a fluid that tends to slow the object
Drag force
Attractive force between any two material objects
Gravitational force
Law stating that the speed and direction of an object do not change unless acted upon by unbalanced forces
First law of motion
Force applied by a machine
Output
Model of a design that is used for testing
Prototype
Property of matter that makes it resist changes in motion
Inertia
Quantity of an object's mass, speed, and direction
Momentum
Upward force exerted by a fluid on a solid object placed in the fluid
Buoyancy
Structure designed to produce lift
Foil