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# Coefficient of restitution watch

1. 10c

I've said that assuming u>0 then if direction were changed then the speed of P which can't be true as .

Is this fine?

Thanks

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2. (Original post by Kvothe the arcane)
Part c

I've said that assuming u>0 then if direction were changed then the speed of P which can't be true as .

Is this fine?

Thanks

Sent from my SM-G925F using Tapatalk
Looks fine. Can u post the question ?
3. (Original post by Duke Glacia)
Looks fine. Can u post the question ?
Thanks . Pleaze see edit.
4. (Original post by Kvothe the arcane)
Thanks . Pleaze see edit.
Yup perfect.

Lovely handwriting btw
5. (Original post by Kvothe the arcane)
I've said that assuming u>0 then if direction were changed then the speed of P which can't be true as
I'm not sure if yours sufficiently shows it or not, but this is how I'd do it:

6. (Original post by Kvothe the arcane)
...
It's a bit... weird.

It'd be better to say that since , then . i.e: a direct proof is easily found here so using an indirect one (contradiction) feels off.
7. (Original post by Duke Glacia)
Yup perfect.

Lovely handwriting btw
Thanks. It's okay but at least it's legible .

(Original post by Ayman!)
I'm not sure if yours sufficiently shows it or not, but this is how I'd do it:

That makes sense . Thanks.

(Original post by Zacken)
It's a bit... weird.

It'd be better to say that since , then . i.e: a direct proof is easily found here so using an indirect one (contradiction) feels off.
I see. Fair enough. That's what made sense to me at the time so I'm glad I posted . Thanks.
8. (Original post by Kvothe the arcane)
Thanks.
Cheers.

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