Standing on a Floor
Key to the possible choices of force
Fair - air resistance
Fs - force of static friction- this is your choice if an object is being pushed or pulled but not moving
Fa - the applied force: any push or pull
Fk - kinetic friction: this is your choice if there is friction and the object is moving
Fg - the force of gravity
Ff - the force of friction. Could be kinetic or static
FN - the normal force
FT - the force of tension. Use this if there is a string or cable involved
Fnet - not really a force, just the sum of all of the vectors added together. This is the final force
Standing on the Floor
Add the appropriate vectors for someone standing on the floor