You are Here: Home >< Maths

# Mechanics AQA 1B 2015 question Watch

1. Two trains, A and B, are moving on straight horizontal tracks which run alongsideeach other and are parallel. The trains both move with constant acceleration. At timet ¼ 0 , the fronts of the trains pass a signal. The velocities of the trains are shown inthe graph below.

Find the distance between the fronts of the two trains when they have the samevelocity and state which train has travelled further from the signal.[3 marks](b) Find the time when A has travelled 9 metres further than B. [8 Marks]

This is basically a question in AQA mechanics 1B, question 8 that I am unsure on how to solve both A and B. Any help is grateful.
2. This is an area under the graph question. At t=8 and v=5.8 you have enough info to find the area for each train. The distance difference is the area difference. For part b you are still working areas. Set up an equation with area sums like part a but with t instead of 8. Add 9 to the area for one train and then solve for t.

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:
Updated: June 17, 2016
Today on TSR

### What is the latest you've left an assignment

And actually passed?

### Simply having a wonderful Christmas time...

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

### Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

### How to use LaTex

Writing equations the easy way

### Study habits of A* students

Top tips from students who have already aced their exams

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.