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Ok, I'm confused.
The rate of gravitational acceleration is 9.8 m/s2
Now, when it's expressed as 9.8 m/s/s - I get that, the rate increases 9.8m per second, every second. Hence;
0s = 0
1s = 9.8m
2s = 19.6m
3s = 29.4m
4s = 39.2m
That all makes sense to me. However, when expressed as 9.8 m/s2 - I don't understand the squaring bit = how does that work in terms of the calculation?
The velocity increases 9.8 m/s every second.
The /s/s part is where the square comes from (m/s)/s = (m/s)*(1/s) = (m/s^2)
Your table is not correct, btw. That would not be the distance traveled.
0s = 0
1s = 9.8m/s
2s = 19.6m/s
3s = 29.4m/s
4s = 39.2m/s
That would be correct, for velocity. Distance is different.
Cheers.Quote:
Originally Posted by Pepe
I'm gonna have to think about "(m/s)/s = (m/s)*(1/s) = (m/s^2)" and get back to you.
For the table, I just omitted the /s by mistake - I get that that's the velocity, not distance.
It seems that omitting it is what is causing your confusion. If you include it, then you can just divide your velocity (right column) by your time (left column) and the s^2 will show up.
Ok, let's take 39.2m/s, divide by our time, so 39.2m/s divide 4s = 9.8m/s. Nothing has, or needs to be squared... Am I being really thick here?Quote:
Originally Posted by Pepe
The seconds are being squared, mate
Squares are a nice shape.
I prefer odd sided figures. Triangles, for example.
Fucking nerds.
Circles top all.Quote:
Originally Posted by bruhnaldo
The ultimate one sided shape.
So, 4s squared is 16s... where does that get involved?Quote:
Originally Posted by mugbull
The squared denotes that it's per second, per second.
Is it not just shorthand to save writing 'per second per second' every time.
39.2 m/s divide by 4 s is 9.8 m/s^2.Quote:
Originally Posted by John Arne
x/y divided by y is x/y^2
Quote:
Originally Posted by SvN
If that's the case, it makes sense. I just couldn't work out with the squaring function came in - if it just denotes /s/s, then I get it.Quote:
Originally Posted by Disco
You're squaring the second notation, not the number of seconds.Quote:
Originally Posted by John Arne
No. (4s)^2 is 16s^2. Need to be careful with notation. Math is applied to units just as it is to numbers.Quote:
Originally Posted by John Arne
There's no missing the squares in this thread.
Dimensional analysis. :drool:
Nothing better than working on a big fuck-off equation, cancelling out basically everything and being left with F = ma or something.
idk pussy, maybe.
P = m
:DQuote:
Originally Posted by bruhnaldo
This isn't going to be a General Questions Thread is it?
https://encrypted-tbn0.gstatic.com/i...qiaq4ijpxAdg&s
I'd say that if anything, that looks like quite a specific question.
We could use it for questions about Generals. Why did Douglas MacArthur wear that dumb hat? Etc
Other acceptable topics include Command & Conquer: Generals and the Washington Generals.
Can I slip in a sly question about what the Grand Old Duke of York's deal was?
He was really indecisive.
I'd say take it to the Duke thread but it's overrun with Mert, sadly.
I can confirm he had 10,000 men.