Inertial Reference Frame

Question 1

Reference Frame

Answer 1

Reference axis that defines a direction in space and a reference point that defines the origin from which motion is measured.

Question 2

Earth Reference Frame

Answer 2

Reference frame at rest relative to Earth

Question 3

Inertial Reference Frame

Answer 3

Law of Inertia holds; reference frame where an isolated object remains at rest or in motion at constant velocity

(No outside forces acting on it stays at rest)

Question 4

Zero-Momentum Reference Frame

Answer 4

Momentum of system is 0; velocity of reference frame is equal to velocity of center of mass of system.

Question 5

Position of Center of Mass of a System

Answer 5

rcm = m1r1 + m2r2 . . . / m1 + m2 + . . .

Question 6

Center of Mass Velocity

Answer 6

vcm = m1v1 + m2v2 + . . . / m1 + m2 + . . .