I shot an arrow into the air; if not for friction, it would have formed this plane curve, from the Greek for "to compare"
... in its broader scientific meaning, however, friction can be 
defined as any force that ... Air itself is subject to viscosity, which prevents objects 
from behaving... [DOC] [TLE] College Physics - Mercer University Physics Department Homepage [PAR] If you redistribute this textbook in a digital format (including but not limited to ... 
provides instructors with tools to customize the content so that they can have the 
...... relative to the plane is represented by an arrow toward the rear of the plane.