You are Here: Home >< Maths

# Coefficient of restitution

Announcements Posted on
Last day to win £100 of Amazon vouchers - don't miss out! Take our quick survey to enter 24-10-2016
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

Sent from my SM-G925F using Tapatalk
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.

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: April 26, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read here first

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams