Science Forces and Speed Flashcards
What is a force?
A push, pull or a twist
Air resistance/drag
The force on an object moving through the air that causes it to slow down (also known as drag).
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 it in contact with a surface, air, or water
deform
To change shape
drag force
The force acting on an object moving through the 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 it’s original length when the force is removed.
electrostatic force
The force acting between two charged objects
equilibrium
Balanced
ectension
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 surfaces.
gravity
A non-contact force that acts between two masses
Hooke’s Law
The law that says that if you double the force on an object the extension will double.
interaction pair
When two objects interact there is a force on each one that is the same size.
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 two magnets, or a magnet and a magnetic material.
mass
The amount of matter (stuff) a thing is made up 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.
push
A type of force.
reaction
The support force provided by a solid surface like a floor.
resistive forces
Any forces that act to slow down a moving object.
streamlined
Shaped to reduce resistance to motion from 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 to slow down (also known as drag).
weight
The force of the Earth on an object due to its mass.
