Motion: What Is Deceleration?

The video tutorial explains the concept of motion, defined as a change in position relative to fixed objects over time. It discusses how time can be measured in seconds, minutes, hours, or days, and distance in feet, yards, miles, or metric units like centimeters, meters, and kilometers. The metric system is preferred in scientific contexts. Examples of motion include a skier covering 40 meters in 7 seconds and mountains rising at 1 centimeter per year.

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