Key terms in forces Flashcards
(21 cards)
A force provided by water
Uplift
A force restricting movement in some way through contact
Friction
A non-contact force that acts between two masses
Gravity
The force that is pushing or pulling something
Driving force
Shaped to reduce resistance to motion from air or water
Streamlined
A stretching force
Tension
To squash into a smaller space
Compress
A force that acts when an object is in contact with a surface, air or water
Contact force
The force of an object moving through the air that causes it to slow down (also know as drag)
Air resistance
The force acting on an object moving through air or water that causes it to slow down
Drag force
The force between two magnets or a magnet and a magnetic material
Magnetic force
The force of the earth on an object due to its mass
Weight
The unit of a force symbol N
Newtons (N)
A piece of equipment used to measure weight in newtons
Newton meter
The support provided by a solid force like the floor
Reaction
A substance that reduces friction between surfaces when they rub together
Lubrication
The law that states if you double the force of an object the extension will double
Hooke’s law
The amount of matter an object is made up of
Mass
_____ is perhaps the most famous scientist of ancient Greece. Born around 300 B.C he was a brilliant mathematician and inventor
Archimedes
Forces are said to be balanced when there is zero ___ force.This will mean that an object is either stationary or moving at a constant speed
Resistant
Forces are know as _____ quantities which means they have size and direction
Vector
