Science - Forces and Speed Flashcards
Air resistance
The force on an object moving through the air that causes it to slow down
Balanced
Forces acting on an object that are the same size but act in opposite directions
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 acting 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 point beyond which a spring will not return to its original length when the force is removed
electrostatic force
The force acting between two charged objects
equilibrium
Balanced
extension
the amount by which an object gets longer when a force is applied
field
a region where something feels a force
friction
the force that resists movement because of contact between two surfaces.
Gravity
a non - contact force that acts between two masses
Hooke’s law
The law that says if you double the force on an object the extension will be double
interaction pair
when two objects interact there is a force on each one that is the same size but in opposing directions
Kilogram
a unit of mass, symbol, kg
lubrication
a substance that reduces friction between two surfaces when they rub together
magnetic force
the force between two magnets, or a magnet and a magnetic material
mass
the amount of matter (stuff) a thing is made of
newton (N)
The unit of force, symbol N
newton meter
A piece of equipment used to measure weight in newtons
non - contact force
A magnetic, electrostatic, or gravitational force that acts between objects not in contact
pull
A type of force
