You are Here: Home >< Maths

# M1 AQA 2015 Q8 Velocity Time Graphs

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. Hi all, I have looked at the unofficial/official mark scheme for this particular paper but I just cannot get started on Question 8b? Could someone please take me through some steps to get started please?

I got through question 8a using suvat's to find the difference but this 8b has knocked me out. Please help
2. (Original post by MLW12345)
Hi all, I have looked at the unofficial/official mark scheme for this particular paper but I just cannot get started on Question 8b? Could someone please take me through some steps to get started please?

I got through question 8a using suvat's to find the difference but this 8b has knocked me out. Please help
I would say that you can make use of your answer from part a, then figure out the time where they've travelled an equal distance and then work out the rest from there.
3. (Original post by MLW12345)
Hi all, I have looked at the unofficial/official mark scheme for this particular paper but I just cannot get started on Question 8b? Could someone please take me through some steps to get started please?

I got through question 8a using suvat's to find the difference but this 8b has knocked me out. Please help
OK thanks, first I realised the trains were at constant acceleration so I solved for A using info from original suvats for both trains.

Then I set up new suvats with S = ? and realised that the difference of displacement between the 2 trains will be equal to 9 which gave me a quadratic that I could solve for T.

## 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: June 10, 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