Acceleration – the change in velocity over time

Acceleration: The term "acceleration" comes from the Latin word "acceleratio," which means "a hastening." The concept of acceleration as the rate of change of velocity over time was formulated in the context of classical mechanics by Isaac Newton. Newton's second law of motion relates force to acceleration and mass, providing a foundational understanding of how objects change their motion when subjected to forces.

Average speed – the total distance traveled by an object, divided by the total time it took the object to travel that distance

Average Speed: "Speed" itself originates from the Old English word "spēd," meaning "success, prosperity, good fortune." The concept of average speed has been used for centuries, but its formalization as a mathematical concept likely emerged as a part of the development of classical mechanics during the Renaissance, building on the works of scientists like Galileo and Kepler.

Bias – a leaning in one direction or another away from the truth due to an error in design, measurement, or analysis

Bias: "Bias" has its origins in the Old French word "biais," meaning "slant, slope." It evolved to connote a particular inclination or prejudice. In a scientific context, the term likely gained prominence with the rise of experimental methodologies and the recognition of errors or influences that could skew results.

Centripetal acceleration – anything moving in circular motion

Centripetal Acceleration: "Centripetal" comes from the Latin words "centrum" (center) and "petere" (to seek or strive for). The concept of centripetal acceleration was developed as part of the study of circular motion and orbits. It was formalized in the works of Johannes Kepler and Isaac Newton, who showed that a force directed toward the center of a circle (centripetal force) is required to keep an object in uniform circular motion.

Distance – how far something has traveled

Distance: "Distance" originates from the Latin word "distantia," meaning "a standing apart." The concept of measuring distance has ancient roots, going back to human's need to navigate and understand their surroundings. Early civilizations developed various units of measurement for distance, which eventually contributed to the modern metric and imperial systems.

Motion – when an object changes position over time relative to a reference point, or a reference direction

Motion: "Motion" traces its roots to the Latin word "motio," meaning "a moving." The study of motion dates back to ancient Greece, with philosophers like Aristotle pondering the nature of motion. However, it was Galileo and later Isaac Newton who laid the groundwork for a systematic understanding of motion and its relationship to forces.

Procedure – a step-by-step description of how to conduct an experiment

Procedure: "Procedure" comes from the Latin word "procedere," meaning "to go forward." In the context of scientific experimentation, the term gained prominence with the development of formalized scientific methodologies, particularly during the Renaissance and the Enlightenment.

Time – how long something takes

Time: "Time" is a concept deeply ingrained in human culture and language. Its measurement and understanding have evolved across civilizations, with advancements in timekeeping devices and the development of precise methods for measuring time intervals, culminating in the modern concept of time as a fundamental dimension.

Unit – describes what is being measured (e.g. meter, second, gram)

Unit: The concept of measurement units has evolved over millennia, with various cultures developing their own systems. Modern scientific measurement units, such as the metric system, have their roots in the Renaissance and Enlightenment periods when efforts to standardize measurements gained traction.

Vector – a measurement that includes a magnitude (a number) and a direction

Vector: "Vector" comes from the Latin word "vehere," meaning "to carry."