Forces and Speed Flashcards
(45 cards)
air resistance
The force on an object moving through the air that causes it to slow down
balanced forces
Forces acting on an object that are the same size but act in opposite direction
compress
To squash into a smaller space
contact force
a force that acts when an object is in contact with a surface, air or water
deform
To change shape
drag force
The force on an object moving through air or water that causes it to slow down
driving force
The force that is pushing or pulling something
elastic limit
the maximum extent to which a solid may be stretched without permanent deformation
electrostatic force
The force acting between two charged objects
equilibrium
When forces acting on an object are the same size but act in opposite directions
extension
The amount by which an object get longer when force is applied
field
The region where something feels a force
friction
The force that resists movement because of contact between surfaces
gravity
A non-contact force that acts between masses
Hooke’s law
The law that says that if you double the force, the extension will double
interaction pair
When two objects interact there is a force on each one that is the same size but in opposite directions
lubrication
A substance that reduces friction between surfaces when they rub together
magnetic force
The force between two magnets, or a magnet and a magnetic material
mass
The amount of matter something is made of
newton meter
A piece of equipment used to measure force in newtons
non-contact force
A magnetic, electrostatic or gravitational force that acts between objects that are not in contact
reaction
The support force provided by a solid surface
resistive forces
Any forces that act to slow down a moving object
streamlined
Shaped to reduce resistance to motion from air or water
