Assertion: body's force | /r/HasProperty | friction
Facets:
value: from gravity
type: CAUSE
value: from air
type: TRANSITIVE-OBJECT
value: in the simple situations
type: TEMPORAL
Source sentences:
text: In the simple situations so far considered, the most important other forces acting on it are friction and the force of gravity.
text: Galileo reasoned that moving objects eventually stop because of a force called friction.
text: The main outside forces acting on an arrow are friction from air and gravity.