mass surfaces in motion ex. SF a book resting on a desk friction force fluid RF ex. riding a bike, bowling sandpaper carpet gravel ex. SF combing hair, writing direction FF ex. airplane, swimmer sliding ice glass tile friction harmful static replace sliding with rolling surfaces in contact are at rest friction smooth the surface rolling friction helpful less force pushing together add a lubricant like oil, wax or grease move through liquid or gas increases as the speed of the object increases gravity weight Law of Universal Gravitation mass surfaces in motion ex. SF a book resting on a desk friction force fluid RF ex. riding a bike, bowling sandpaper carpet gravel ex. SF combing hair, writing direction FF ex. airplane, swimmer sliding ice glass tile friction harmful static replace sliding with rolling surfaces in contact are at rest friction smooth the surface rolling friction helpful less force pushing together add a lubricant like oil, wax or grease move through liquid or gas increases as the speed of the object increases gravity weight Law of Universal Gravitation
(Print)
mass
surfaces in motion
ex. SF a book resting on a desk
friction
force
fluid
RF ex. riding a bike, bowling
sandpaper carpet
gravel
ex. SF combing hair, writing
direction
FF ex. airplane, swimmer
sliding
ice
glass tile
friction harmful
static
replace sliding with rolling
surfaces in contact are at rest
friction
smooth the surface
rolling
friction helpful
less force pushing together
add a lubricant like oil, wax or grease
move through liquid or gas
increases as the speed of the object increases
gravity
weight
Law of Universal Gravitation
