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phetsims / projectile-motion

"Projectile Motion" is an educational simulation in HTML5, by PhET Interactive Simulations.
GNU General Public License v3.0
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User request: lower gravity range minimum #263

Open oliver-phet opened 3 years ago

oliver-phet commented 3 years ago

I thought I'd have my students vary gravity to match the planets/Moon/dwarf and was disappointed to find the setting doesn't go below 5 m/s^2 The moon is 1.62 m/s^2, Mars is 3.711 m/s^2, and Pluto is 0.62 m/s^2

arouinfar commented 3 years ago

The lower the gravity limit, the lower the terminal velocity can be. I think we ran into performance issues because there are lots of dots that need to be drawn on the path. I tried to find a paper trail for this, but I couldn't.

I'll test things locally with a lower gravity limit and see how it goes.

zepumph commented 3 years ago

@arouinfar, pinging you again on this since it is a high priority for our client again.

zepumph commented 3 years ago

From design meeting today with @arouinfar, @kathy-phet, and myself, we decided to try out a minimum of 1m/s^2.

Committed above.

This, in correlation to a variety of UI changes we will do to support a max initial speed of 100m/s over in #153, should cover the usability concerns and the feature.

arouinfar commented 2 years ago

Projectile Motion is an "if-time" quarterly goal, so marking as on-hold.

matthew-blackman commented 1 year ago

We are working on Projectile Motion as part of the data fluency grants, marking this off hold since we can address it as part of that work.

arouinfar commented 1 year ago

Unassigning myself until work on this flavor of Projectile Motion resumes.