Operational Definitions/Measurement System Analysis. The focus for this month is on operational definitions. Operational definitions are one key to good data collection. They are a necessary, although not sufficient, condition for good data collection. Plus, we will look at how control charts can be used to evaluate the measurement system.
Air resistance induces a drag force on any body that falls through any atmosphere other than a perfect vacuum, and this drag force increases with velocity until it equals the gravitational force, leaving the object to fall at a constant terminal velocity.
  No. The speed an object will fall in water depends on:   1) The mass of the object compared to the volume of water displaced   2) The hydrodynamic friction between â¦ the water and the objects motion   3) The local gravity.  For example:   A 10cm sphere of iron has a density of 7.8 and a mass of 4.08kg.gnoring wind resistance, all objects fall at the same speed while under the influence of the same gravitational forces. For example, an object on the moon falls slower than on the earth. But while on the earth, two objects of the same wind resistance will always fall at the same speed.