help wit some symbols i don't know (1 Viewer)

[prsce24]

hey. im a yr 11
i realised that they changed s (displacement) to r
does it matter if i still use s ?

and check if the following are correct



v=s/t (speed)

v~=s~/t (velocity) ~ under the v and the s

thanx

 

[Xayma]

velocity=displacement/time

speed=distance/time

 

[prsce24]

...

Xayma i know that.. i just want to know the official symbols without using "r"
No one seems to use "r"

 

[acmilan]

I was always taught s for displacement

 

[Uncouth]

As far as I know, and as logic goes, it doesn't really matter what symbols you use. You'll find there really isn't an "official" way to write them, although one method could be may prevalent that the other.

For me, I always use the following symbols,
v = velocity,
d = displacement,
s = speed,
r = distance,
and t = time,
such that v = d / t and s = r / t. Of course, I'm sure the majority would have another way of writing it but they're all the same. I use those symbols because they are unique and are less confusing for me.

So you can still use s, but you need to be sure of whether you found speed or velocity in your answer.

 

[prsce24]

.

thanx. i guess ill juss stick to using v & s with ~ at the bottom

 

[velox]

Thats what i was thinking...why the hell do they have to change the damn symbols???

 

[Zarathustra]

The ~ means that they're vectors... I don't think it matters whether you put them on or not (or a dot or a straight line etc.)

 

[zeropoint]

From my experience, it is customary to denote arc length (distance) as s whereas the position (radius) vector is usually refered to as r or R. In this way, speed and velocity may be defined as |v| = ds/dt and v = dr/dt, respectively where d/dt refers to the derivative with respect to time. The use of d for distance is unacceptable as it may easily be confused for the differential d.