You are Here: Home >< Maths

# A level Maths Mechanics 1: SUVAT Question watch

1. HELP!!!!

-> QUESTION http://www.mathsgenie.co.uk/resources/m1-suvat.pdf
-> SOLUTION http://www.mathsgenie.co.uk/resources/m1-suvatans.pdf

For Question 6, why does the solution show V to be a negative number in its workings out? does negative V apply for all questions that talk of an "elevation above ground"?
2. (Original post by 7SVN)
HELP!!!!

-> QUESTION http://www.mathsgenie.co.uk/resources/m1-suvat.pdf
-> SOLUTION http://www.mathsgenie.co.uk/resources/m1-suvatans.pdf

For Question 6, why does the solution show V to be a negative number in its workings out? does negative V apply for all questions that talk of an "elevation above ground"?
It just matters which direction you take to be positive. here they've taken up as the positive direction. so acceleration due to gravity, the final velocity, and the total displacement (since it's 10m ABOVE the ground) are all going to be negative as they are all acting downards, and they've taken upwards to be positive. It doesn't matter which direction you take as positive as long as you're consistent.

### Related university courses

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: October 23, 2017
The home of Results and Clearing

### 2,389

people online now

### 1,567,000

students helped last year
Today on TSR

### University open days

1. Keele University
Sun, 19 Aug '18
2. University of Melbourne
Sun, 19 Aug '18
3. Sheffield Hallam University
Tue, 21 Aug '18
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