How is acceleration of falling objects affected by gravity?

1 Answer
Oct 3, 2014

In the absence of gravity or other forces, objects wouldn't accelerate. There would be no falling. In fact, you'd have a difficult time saying which direction was down.

Those semantics aside, objects near the earth accelerate at a rate of about 9.81 m/s^2. If an object starts out not moving and is allowed to fall, one second later it will be moving at 9.81 m/s. After two seconds it will be moving 19.62 m/s.

The velocity of a falling object (v) depends on the time it has been falling (t), the acceleration of gravity (g), and the velocity it had at time zero (v_0).

v = g*t + v_0