Free Fall

All objects fall with the same acceleration, 9.8 m/s/s or 9.8 m/s2 (which we approximate as nearly 10 m/s/s or 10 m/s2).
We call this free fall.
When such objects fall, the only force acting on them is their weight, the force of gravity.

The only force on a body in freefall is the force of gravity. We call this its weight.
Since it accelerates at 9.8 m/s/s, that net force or weight must be

w = (mass )x (9.8 m/s/s),
w = m g

This acceleration due to gravity we label g.

g = 9.8 m/s2.

Newton's Second Law of Motion

Back to "Table of Contents"

Terminal Velocity

(C) 2003, Doug Davis; all rights reserved