You are Here: Home

quick M1 question

Announcements Posted on
International student planning UK study in 2016? Take our short survey and we’ll send you a £5 Amazon voucher 03-05-2016
Talking about ISA/EMPA specifics is against our guidelines - read more here 28-04-2016
1. For question 7iv, why is the value of T the smaller value of the quadratic? So, why is t 3 instead of 6??

CONFUSED.
2. (Original post by master y)
For question 7iv, why is the value of T the smaller value of the quadratic? So, why is t 3 instead of 6??

CONFUSED.
They only really collide once.

From the quadratic equation, it tells us they collide either at time 3 or 6.

If they collided when t=3, then they won't collide again.

So the time cannot be 6. Since they have already collided.

And the question says "P and Q collide first when t=T."

Hope this makes sense.
3. (Original post by kogaht)
They only really collide once.

From the quadratic equation, it tells us they collide either at time 3 or 6.

If they collided when t=3, then they won't collide again.

So the time cannot be 6. Since they have already collided.

And the question says "P and Q collide first when t=T."

Hope this makes sense.
oh gosh that does make sense! thanks!

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: May 29, 2012
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 did it go?

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