Forces revision 7G Flashcards
air resistance
The force on an object moving through the air causing it to slow down.
balanced
Force acting on an object that are the same size but in opposite directions.
drag force
A force acting on an object moving through air or water causing it to slow down.
driving force
A force that is pulling or pushing something
elastic limit
The point beyond which a spring will not return to its original length.
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 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 double.
lubrication
A substance that reduces friction between surfaces when they rub together.
non-contact force
A magnetic, electrostatic or gravitational that acts between objects not in contact.
reaction
the support force provided by a solid surface like a floor.
