Force Flashcards
Vector
Physical quantity with magnitude and direction
Force
Push or pull exerted on one object by another
What are the non-contact forces?(3)
Magnetic
Gravitational
Electrostatic
What are the contact forces? (3)
Friction
Tension
Normal force
How is friction exerted?
In the opposite direction of the motion
Parallel to the surface
Resultant
The single vector that has the same effect as the original forces
Normal force
The force that a surface exerts on an object with which it is in contact, and which is perpendicular to the surface
Equilibrium
When opposing forces are balanced and the resultant force is 0
Frictional force (f)
The force that opposes the motion of an object and which acts parallel to the surface.
Static frictional force (fs)
The force that opposes the tendency of motion of a stationary object relative to a surface.
Kinetic frictional force (fk)
The force that opposes the motion of a moving object relative to a surface.
What’s the formula for friction?
Fr = μ x Fn
What’s the formula for Fnet and acceleration?
Fnet = m x a
a = Fnet / m
