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What is the measurement scale in meters?
It is the metric or SI scale for linear measurement.
What does 3k mean?
3k can mean 3,000 as k is a symbol for 1,000. If you're running a race, 3k can also mean 3 kilometers or 3,000 meters.
What is the difference between meters squared and square meters?
None! They both mean the same thing. For example, if your floor measures 3 meters long and 2 meters wide you would need 6 square meters of carpet. Alternatively you could say "My floor measures 6 meters squared." Five meters squared. This refers to a linear measure, five meters. It also tells what function to apply to the measure-- make a square with it. If I make a square with a five meter chain, I will end up with 25 square meters. Five square meters. This will be equivalent to five of the 25 squares that the above area contains. Quite different. If you have a floor measuring 3 meters by 2 meters and you ask the carpet guy for carpeting to cover 6 meters squared, you will get an unpleasant surprise.
What is the speed of a hockey puck moves 45 meters in 5 seconds?
Speed in physics is called velocity what you are looking for when you are talking about speed/velocity you are looking for an answer with the units being "distance/time" such as "miles/hour" in this case you are using the distance measurement of meters and the time unit of seconds therefore you want an answer in "meters/second." Ergo, you divide the unit of distance by time so it would be "45 meters/5 seconds" which would simplify to "9 meters/second" where the symbol "/" can be pronounce as "per" so it could be written "9 meters per second" I hope you did just get the answer, but rather some of the thought process of the issue.
What is the purpose of a symbol?
To "represent" something or someone IS a symbol's purpose. To empower the wielder of the symbol with what the symbol represents.
