Force revision Flashcards
Air resistance
The force on an object moving through the air that causes it to slow down [also know as drag].
Balanced forces
Forces acting on an object that are in the same size but act in opposite direction.
Compress
To squash in a smaller place.
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 that is moving through air or water that causes it to slow
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 whena force is applied
field
a 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 2 masses
hooke’s law
the law that says that if you double the force on an object the extension will double
interaction pair
when 2 objects interact there is a force on each one that is the same size but in an opposing directions
kilogram[kg]
a unit of mass ,symbol kg
Lubrication
A substance that reduces friction between surfaces when they rub together.
Magnetic force
The force between 2 magnets, or magnet and magnetic surface.
Mass
The amount of the matter(stuff) a thing is made up of
Newton
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 will act between on jet said not in contact.
Push and pull
Types of forces
Reaction
The support force provided by a solid surface like the floor
Resistive force
Any forces that act to slow down and moving object.
Streamlined
Shaped to reduce resistance to motion air or water.
Tension
A stretching force
Unbalanced
Opposing forces On an object that are unequal.
Water resistance
The force on an object moving through water that causes it slow down (also know as drag)
Weight
The force of the earth on an object due to its mass.
