should "superscript 2" be handled differently?

[pixelzoom]

Noted while I was working on phetsims/scenery-phet#446 (comment) ...

projectile-motion-strings_en.json contains this string:

  "metersPerSecondSquared": {
    "value": "m/s²"
  },

I'm not sure if this pasting the Unicode "superscript 2" directly into the string value is a good idea. A couple of other options: (1) use the Unicode escape "m/s\u00b2", (2) use "m/s²" with RichText.

[zepumph]

I think that changing this to use the unicode version seems right to me. I'll do that now.

[zepumph]

@pixelzoom does that seem better to you (I also did that for degree).

[pixelzoom]

Yes, that seems better. But note that the degrees symbol is in MathSymbols.js, and we haven't been making it translatable in other sims (most recently Vector Addition).

[zepumph]

Sounds good. I'll make another issue.