April 26th, 2018, 06:26 AM  #1 
Member Joined: Oct 2017 From: Japan Posts: 62 Thanks: 3  Difference between Speed and Velocity
Thanks for the interest my videos have been receiving from the forum. If anyone is interested here is a video that explains the difference between speed and velocity. The two terms are often used interchangeably in everyday language even though they have very different meaning. 
April 26th, 2018, 09:52 AM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1039 
velocity noun, plural velocities. 1. rapidity of motion or operation; swiftness; speed 2. the rate of speed with which something happens; rapidity of action or reaction. 
April 26th, 2018, 10:39 AM  #3 
Senior Member Joined: Sep 2015 From: USA Posts: 2,631 Thanks: 1470 
$v$ is a vector $speed = \v\$ done. 
April 26th, 2018, 01:22 PM  #4 
Math Team Joined: May 2013 From: The Astral plane Posts: 2,340 Thanks: 983 Math Focus: Wibbly wobbly timeywimey stuff. 
It doesn't help that many Physics teachers and textbooks get sloppy and do not use the terms properly. I have had to correct a number of problem statements and book references while I was teaching. Dan 
April 27th, 2018, 07:25 AM  #5 
Member Joined: Oct 2017 From: Japan Posts: 62 Thanks: 3 
The definitions from the dictionary don't seem to help at all, no wonder students are often confused.

April 27th, 2018, 10:20 PM  #6 
Senior Member Joined: Nov 2010 From: Indonesia Posts: 2,001 Thanks: 132 Math Focus: Trigonometry  Forget about dictionary. A coworker of mine got confused when she was about to put the definition of fractions in the glossary since the dictionary defines it as "numbers other than whole numbers", but both of us knew that irrational numbers are neither whole numbers nor fractions.

April 28th, 2018, 02:36 PM  #7  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,340 Thanks: 983 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Dan  
April 29th, 2018, 01:59 AM  #8 
Senior Member Joined: Jun 2015 From: England Posts: 915 Thanks: 271 
I haven't been able to watch the vid since embedded video does not show on this site on my screen. However if you are going to all the bother of making a video about the distinction then it must be worth discussing other associated terms. Here are a few: Celerity, swiftness, rapidity, fleetness, rate 
April 29th, 2018, 04:48 AM  #9  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,597 Thanks: 1039  Quote:
youtube]AoaqUqRSMxo[/youtube which googles to: https://www.google.ca/search?source=....0.C_gH30_PJmg I also have similar problem viewing latex equations... Last edited by Denis; April 29th, 2018 at 04:52 AM.  
April 29th, 2018, 05:53 AM  #10  
Senior Member Joined: Jun 2015 From: England Posts: 915 Thanks: 271  Quote:
So since a fair exchange is no robbery, I find that I need to refresh the page to see the LaTex, or even leave the thread and return.  

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