On Earth, it increases by 32.2 feet per second every second... the acceleration due to gravity. There's a metric measure too... just convert it yourself.
9m/s2
According to the speed of the aircraft on which the object is loaded
Kinetic energy depends on an object's mass, as well as on its speed. Since an object's mass usually doesn't change much, the kinetic energy will be greatest when the object moves fastest.
At any time after it starts falling, an object is falling 9.8 meters per second (32.2 feet per second) faster than it was falling one second earlier.
Speed is a scalar quantity with out direction, velocity is a vector quantity with a direction, The magnitude of a velocity, |V| is its speed. So all velocities have a speed, including a speed of zero.
If the object is falling in vacuum, then its direction is downward, and its speed at any time is Speed = (speed when time started) + [(acceleration of gravity) x (number of seconds since time started)]. If the object is falling through air, water, or some other fluid, then the formula is much, much more complicated. It involves the object's mass and shape, and the properties of the fluid it's falling in.
There is not one single answer for that. The terminal velocity of an object will depend on the amount of gravity (which wouldn't change much in this case), on the density of the atmosphere (which WILL change quite a bit, depending on what part of the atmosphere you are considering), and on the object's mass, size, and shape.
9m/s2
According to the speed of the aircraft on which the object is loaded
That depends on many different factors, the two most obvious ones being friction and gravity. If the object is completely frictionless, and falling at 9.8m/s2 (an approximation of the average acceleration from Earth's gravity), then it would gain 9.8m/s in speed with each second that passes. If on the other hand it was falling in a frictionless environment on Jupiter, it would gain approximately 24.79 m/s.
Kinetic energy depends on an object's mass, as well as on its speed. Since an object's mass usually doesn't change much, the kinetic energy will be greatest when the object moves fastest.
At any time after it starts falling, an object is falling 9.8 meters per second (32.2 feet per second) faster than it was falling one second earlier.
Kinetic energy depends on mass and speed. For a given object (whose mass will normally not change much), it will be greatest when the speed is greatest.
Speed is a scalar quantity with out direction, velocity is a vector quantity with a direction, The magnitude of a velocity, |V| is its speed. So all velocities have a speed, including a speed of zero.
Since no object with mass can reach the speed of light -- such an object can only approach that speed -- the question is meaningless.
If it "does not travel", the speed is zero. Not much to calculate there.
The absence of any force that affects speed and direction on the certain object. If there are none of these forces to affect the object, then the object will not be affected and will not change.