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.
t = time the object is in motion (in seconds) h 0 = the initial height (in feet or meters) from which the ball was dropped or launched v 0 = the initial velocity (in ft/sec or m/sec) of the object when it was launched. If v 0 < 0, the object was propelled downward v 0 = 0, the ball was dropped from rest with no initial velocity