3.1 what are the types of forces Flashcards
forces
an interaction between objects to explain change in motion
types of forces
contact forces and non contact forces
non contact forces
do not require objects to be in contact to exist
contact forces
exist between objects that are in contact
types of non contact forces
-gravitational force
-electrostatic force
-magnetic force
gravitational force
the pull exerted by earths gravity on any object
electrostatic force
the attractive (pull) or repulsive (push) forces between electric charges
magnetic force
the attractive (pull) or repulsive (push) forces between magnets
types of contact forces
-friction
-air resistance
-normal force
-tension
friction
the force that opposes or tends to oppose motion between surfaces in contact with each other
air resistance
the frictional force exerted by air that opposes motion of moving objects
normal force
the push exerted by a surface on an object pressing on it (the push is always perpendicular to the surface)
tension
the pull exerted by a stretched spring, string or rope on an object attached to it
