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.
Once an object is in the air its flight path is governed by factors prior to its release. Factors affecting the flight path of a Projectile are: Gravity Air Resistance Speed of Release Angle of Release Height of Release Spin Speed of Release This refers to how fast the object is released (thrown or hit). A projectiles speed of release is largely determined by the muscle force.