This kind of feedback is not helpful for renowned creators in this community such as myself. Please refrain from criticising others hard work when you merely have a kata about ascii art.

I'm disappointed by the lack of effort in this kata Mr Hilla284, do better next time.

Done!

Sorry, I didn't realise! This is fixed now

In this diagram the ball bounces once:

You may want to change this line accordingly.

Alright, I'll try and add this in! (This is awesome by the way)

I've marked the previous comment as a spoiler to not take up half of the homepage discourse.

Input validation is like doing some actual work.
I come here to avoid that.

Little typo in the description: modlled should be modelled.

Approved at 7kyu. Congraz to your first kata!

OK

Since your function has the parameters in the order h, w, v, I would suggest to also have the assertion messages in that order.

Do you think it's fine how I've done it? What about sacrificing the accuracy for the sake of more bounces?

Yeah, but that put the ball/whatever right in the middle. I found that "less self-explanatory", somehow.