/\ /d\ /-----\ /s | t \ ---------- where d=distance s=speed t=time you can replace distance with displacement and speed with velocity this is a good way to remember the formula /definition (3:43)
" s" in displacement came from the German word “strecke”, which means route in English. Another answer indicates that this probably came from the Latin word for space - “spatium”. This is also possible as the vector actually indicated position and Δ is what indicates displacement. I think these are more likely reason, more than ‘S’ looking like a curve path. However to verify we need to dig into the history of science. Mechanics was first formalized in mediaeval Arab world and its quiet possible that ‘s’ for position is a historical remnant from there. The German/Latin origin hypothesis can also be verified following the same route.
Maybe because d stands for distance and also how distance and displacement are similar quantites(as in they both tell us the distance and shortest distance) so they cant both be d
No. Displacement is the absolute change from position A to position B, which is a straight line. Since velocity is a rate of change of displacement and NOT distance (which would account for curves and such), velocity would be expressed in a straight line. The second top comment says that Shantanu was in heavy traffic. That would be true if he was travelling on a main road. However, if he was travelling on a windy road, the speed may have been much higher than his velocity.
delta x is what stands for displacement, and it is not d because d is distance, the difference between distance and displacement is that distance is total distance covered and displacement is how far away from the origin something moved and in what direction
As I understand it (not that you'll be reading these comments after three months), s is for displacement because A) d is for distance, as well as later the derivative. B) s can stand for space, which is a clearer way of describing displacement.
just a question , lets say like what his question said , the person was displaced 5km to the north , however he doesn't travel straight to that displacement , instead he goes in curves and stuff , will average velocity still be displacement over time ? since velocity is a vector , the different directions of velocity will cancel off ?
If you become a pilot, you will learn to plan your flights. For each leg of the flight, where a leg is basically a straight line, you will fly the plane with a velocity which consists of a ground speed and heading to compute how long this leg will take. You need to know how long each leg will take in order to determine how much fuel is required. Each leg of the flight is computed because when the plane changes heading, its ground speed changes due to the winds.
@CasperBHansen The discriminant is used with polynomials (and isn't solely confined to just quadratics), so it's part of algebra. And it is more commonly a triangle (delta).
thanks from Egypt
2:22
We can use (X) too
this vid is lit bruh
Even I got confused in vector and scalars but, this video makes it very clear
nice same here
/\
/d\
/-----\
/s | t \
---------- where d=distance
s=speed
t=time
you can replace distance with displacement and speed with velocity
this is a good way to remember the formula /definition
(3:43)
What's that sign Sal has used at 6:06? On the RHS.
8:23 WOAH THERE
Great video. Thanks !
Are these video enough to prepare for GAMSAT Physics?
this is the most understanding video ever
It was very helpful
Thank u
I really love his method of Teaching, BETTER THAN SCHOOL!!!!!!!!!!!!!!!!!!!!
S is for Spatium, Latin for space, distance
I think s is for "space", as in travelled space
thank you from Baghdad
Allah Akbar?
i like this video very much
awsome college stuff
Good Explanation
d is used for both 'displacement' and 'distance' and besides displacement is vector and distance is scalar.
Thank you for videos.
Ur better than our hod for science
This helps so much that the people mixed up thumbs down for up
Thank you so much!
Sal is awsome
Nice video... keep it up sir...
thank you so much
0:25.
So exciting
clear!!
0:52
What a complex way of explaining something very simple...
Stfu it was amazing and simple.
I love you!!!
+Janat Khan Khan Family.
thanks keep it on
Good
I have a HiSET exam on Science so, I am learning about Physics among with Biology and Earth Science! @Khan Academy
1:27 "I care about the SIZE of this thing" 😏
mans a life savor
Ur the best
Superb!
do heat please (physics) !!!!!!!!
awesome
d is for distance
I love...love...love your videos.....
Is it the same with kg?
@lasese.5436 I think!
'd', maybe, is for distance
" s" in displacement came from the German word “strecke”, which means route in English. Another answer indicates that this probably came from the Latin word for space - “spatium”. This is also possible as the vector actually indicated position and Δ is what indicates displacement. I think these are more likely reason, more than ‘S’ looking like a curve path.
However to verify we need to dig into the history of science. Mechanics was first formalized in mediaeval Arab world and its quiet possible that ‘s’ for position is a historical remnant from there. The German/Latin origin hypothesis can also be verified following the same route.
@Cool Tricks i don't know
d for distance
الله عليك ياأوستاااااااااه ذ
Tommorow is my mastery test😊
Hey thanks you were really helping
Even in 2020 this is some very good explanation.
a reason that s is used for displacement instead of d is that it is far too easy to confuse displacement with distance.
Maybe because d stands for distance and also how distance and displacement are similar quantites(as in they both tell us the distance and shortest distance) so they cant both be d
khan academy is my best friend
s comes from the Latin word Spatium and means Interspace or distance
Finding the velocity is basically finding the unit rate.
So nervous but it's ok,thanks for this vid🙏
How do you calculate velocity with only time given?
The "s" for displacement comes from latin word spattium which means distance
No. Displacement is the absolute change from position A to position B, which is a straight line. Since velocity is a rate of change of displacement and NOT distance (which would account for curves and such), velocity would be expressed in a straight line.
The second top comment says that Shantanu was in heavy traffic. That would be true if he was travelling on a main road. However, if he was travelling on a windy road, the speed may have been much higher than his velocity.
The better explanation is with spatium (latin) or speed (egl) displacement is just speed with a certain direction
in the denoominator
delta x is what stands for displacement, and it is not d because d is distance, the difference between distance and displacement is that distance is total distance covered and displacement is how far away from the origin something moved and in what direction
What about the SI units?
The letter for displacement is s because "S" stands for the Latin word "spatium", which means distance or space.
lol
displacement is very different to distance traveled
Very enjoyable thank you
It's S cause D is used up for the scalar quantity distance.
Yeah, that's right.
Khan is just explaining exactly why you can do just that.
Sal - et al - I think of the letter s (2:28) as 'space placement' rather than displacement
shortcut for converting m/s is
multiply the number by 5/18
the ans will 100% correct
I think the letter for displacement is s because displacement is related to speed. I am not sure though.
i love you!
Distance = scaler
Distance + direction = Displacement
O:23
👍👍👍👍👍👍👍
his accent is really OP!
9:25 he laughed
S.I. units. It does represent the same thing.
How do you get velocity from speed?
As I understand it (not that you'll be reading these comments after three months), s is for displacement because
A) d is for distance, as well as later the derivative.
B) s can stand for space, which is a clearer way of describing displacement.
bright side of youtube
exam revision. done.
i think "s" is used instead of "d" because "d" is used for distance in calculating average speed
just a question , lets say like what his question said , the person was displaced 5km to the north , however he doesn't travel straight to that displacement , instead he goes in curves and stuff , will average velocity still be displacement over time ? since velocity is a vector , the different directions of velocity will cancel off ?
Why Meter has been change? and why not the hours?
Very well explained! 😊
1:0
denuminator
even i'm in js school,i can understand it
please do instantaneous velocity and speed
thanks for this good teachng!!~! Better than the school teaching
@Raysyedrocks it was not meant to be a factual statement
S means strada or rode in latin
Thank you
do we have to simplify it?
Velocity = Displacement over time.
With a direction
shouldn't you have squiggly equal sign if you are rounding?
Someone please tell me one good real life example of why I need velocity over speed!!
If you become a pilot, you will learn to plan your flights. For each leg of the flight, where a leg is basically a straight line, you will fly the plane with a velocity which consists of a ground speed and heading to compute how long this leg will take. You need to know how long each leg will take in order to determine how much fuel is required. Each leg of the flight is computed because when the plane changes heading, its ground speed changes due to the winds.
@CasperBHansen
The discriminant is used with polynomials (and isn't solely confined to just quadratics), so it's part of algebra. And it is more commonly a triangle (delta).
I heard from someplace that s means space. Could be wrong, tho
+TKWeckroth Spatium, latin for Space. so yeah
***** Yeah, thanks