PHYSICS. It has laws. The penny will accelerate due to the pull of gravity at a rate dependent on the mass of the object. It will fall until the force of the air resistance (lag) is equal to the force of gravity pulling down on the object. This is called terminal velocity, and the penny reaches this speed and mantains it until it hits the ground or what ever object gets in the way. ever wonder why a feather stops accalerating shortly after you let go?Originally Posted by Hokuro
Terminal Velocity & accaleration of a freefalling object:
a=accaleration (m/s^2) v=velocity (m/s) m=mass of penny (g)
f=force of gravity = 9.80 m/s g=accaleration of gravity = p.80 m/s^2 t=time(s)
Velocity cannot increase forever. Gravity will increase the speed of the penny in the downward direction, thus increasing drag on the penny (air resistance). The penny WILL CONTINUE TO ACCALERATE UNTIL THERE IS NO NET FORCE ACTING ON THE OBJECT. As velocity increases, drag increases, but the accaleration of gravity remains the same. Thus eventualy the two will even out, and no more net force. Thus, no more accaleration. Terminal velocity reached.