forces and movement Flashcards
(14 cards)
what is scalar quantity
scalar quantities only have magnitude
what is a vector quantity
vector quantities have both magnitude & direction
unit for forces
Newtons, N
what is electric force
attraction or repulsion between two charged objects
what is tension force
occurs within materials when stretched in a spring
what is compression force
occurs within materials when squashed
what is thrust force
a force which propels an object forward
what is weight force
force acting on a mass due to the effect of a gravitational field
what is lift force
an upward force generated by the wing of an aircraft when there is a difference in pressure above & below the wing
what is friction force
a force which opposes the motion of an object
what is contact force
a force which occurs whenever an object rests on something, and always acts as 90 degrees to the surface
what is upthrust force
the force which enables objects to float due to the displacement of fluid
what is magnetic force
attraction or repulsion due to magnetic fields
what are free body diagrams
free body diagrams show all the forces acting on a particular object
