General Questions Thread

[John Arne]

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?

[SincereTheRebel]

https://media3.giphy.com/media/9ohlKnRDAmotG/giphy.gif

[Pepe]

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.

[John Arne]

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.

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.

[Pepe]

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.

[John Arne]

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?

[mugbull]

The seconds are being squared, mate

[Sir Andy Mahowry]

Squares are a nice shape.

[bruhnaldo]

I prefer odd sided figures. Triangles, for example.

[phonics]

Fucking nerds.

[Giggles]

I prefer odd sided figures. Triangles, for example.

Circles top all.

[Disco]

The ultimate one sided shape.

[John Arne]

The seconds are being squared, mate

So, 4s squared is 16s... where does that get involved?

[SvN]

The squared denotes that it's per second, per second.

[Disco]

Is it not just shorthand to save writing 'per second per second' every time.

[mugbull]

So, 4s squared is 16s... where does that get involved?

39.2 m/s divide by 4 s is 9.8 m/s^2.

x/y divided by y is x/y^2

[John Arne]

The squared denotes that it's per second, per second.


Is it not just shorthand to save writing 'per second per second' every time.

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.

[John]

So, 4s squared is 16s... where does that get involved?

You're squaring the second notation, not the number of seconds.

[Pepe]

So, 4s squared is 16s... where does that get involved?

No. (4s)^2 is 16s^2. Need to be careful with notation. Math is applied to units just as it is to numbers.

[Spikey M]

There's no missing the squares in this thread.

[-james-]

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.

[bruhnaldo]

idk pussy, maybe.

[Spikey M]

P = m

[Baz]

idk pussy, maybe.

:D

[hfswjyr]

This isn't going to be a General Questions Thread is it?
https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcRE5P0Lgsn7SIAiZvT5QRukLd2-KUKiofFuQxi8hrqiaq4ijpxAdg&s

[Jimmy Floyd]

I'd say that if anything, that looks like quite a specific question.

[Disco]

We could use it for questions about Generals. Why did Douglas MacArthur wear that dumb hat? Etc

[Ian]

Other acceptable topics include Command & Conquer: Generals and the Washington Generals.

[Spikey M]

Can I slip in a sly question about what the Grand Old Duke of York's deal was?

[Disco]

He was really indecisive.

[Ian]

I'd say take it to the Duke thread but it's overrun with Mert, sadly.

[Shindig]

I can confirm he had 10,000 men.