Resultant forces Flashcards
what are forces
forces are push or pull movements that change the shape of the object or its motion
what are the 2 types of forces
contact
non-contact
what are 3 types of contact forces
air resistance
friction
reaction force
what are 3 types on non-contact forces
gravity
magnetism
electrostatic force
what is newtons 3rd law
for every action, there’s an equal and opposite reaction
if a exerts force on b, b exerts force on a
what’s a force pair
what are the force pairs when standing
these are opposing forces
if you’re standing gravity and reaction force are force pairs
what does friction do?
opposes motion of 2 surfaces when they try to slide across each other
what is newtons 1st law
if the resultant force is 0, the object is either at rest or constant velocity
what is newtons 2nd law
if the resultant forces are not 0 the object will accelerate or decelerate
what is mass dependant on
mass is dependant on the quantity of the matter in an object (scaler)
what is weight dependant on
depends on how strong the gravitational pull is (vector)
what makes an object an elastic object?
an object that returns to its original shape once force is removed
what does hooks law state
the extension of the spring is directly proportional to the force applied as long as within limit of proportionality
