describe the acceleration free fall.?

Question

please

Answer 1

Free fall means falling towards the earth without anything to slow you down. Anything in free fall will accelerate towards the earth, increasing its speed by 9.81 meters per second each second. So after one second it will be doing 9.81 m/s. After two seconds, it will be doing 19.62 m/s.

An object in orbit around the earth is also said to be in free fall, even though it is not getting any closer to the earth. Mathematically it is accelerating towards the earth at the same rate of 9.81m/s/s, but because it is going sideways it misses the earth and never gets any closer.

Answer 2

Acceleration towards the earth is roughly 9.8 m/s^2, for most calculations this is a sufficiently exact value but in actuality the pull due to gravity varies slightly, based on distance from the earth, see the universal law of gravitation for more on the relationship of gravitation pull and distance between objects as it would affect the calculations.

Assuming no external forces are present like friction and wind resistance you would keep accelerating toward the earth until you are converted into a pancake on impact. However all bodies falling through the atmosphere are subject to extra forces like the previously mentioned forces at a certain point you would actually stop accelerating, this is called terminal velocity. Of course terminal velocity is enough to turn you into a pancake on impact too.

So in the real world objects accelerate towards the earth at roughly 9.8 m/s^2 until terminal velocity is reached, at which time the velocity is constant until impact with the earth.