Turn on thread page Beta
 You are Here: Home >< Maths

M2 Exam Question watch

1. Hi,

Has anybody done the June 2001 paper, particularly Question 4b/c
If you haven't got it on you click the link below to access it.
http://www.mathsexams.ukteachers.com...2_2001_Jun.pdf

Answers to part A) (-25i - 5j)ms^1 B) 32.9m C) 51m

2. 4b. As you need the vertical height, you only need consider the j component.
At its greatest height, the ball's velocity will be 0ms^-1

So 0=u^2-2as
so s=u^2/2a
=25^2/(2*9.8)
=625/2g=31.9m (i hope you made a mistake on the answer you put)

c. The time taken for ball to fall to 1m above ground is calculated as follows.

s=ut+0.5at^2
1=25t-4.9t^2
so t=0.0403 or 5.0617s.
The first time is when the ball passes 1m on the way up so we need the second value.

Horizontally, the ball has travelled a distance:
s=ut
=10ms^-1 * 5.0617s
=50.6m
3. (Original post by lgs98jonee)
4b. As you need the vertical height, you only need consider the j component.
At its greatest height, the ball's velocity will be 0ms^-1

So 0=u^2-2as
so s=u^2/2a
=25^2/(2*9.8)
=625/2g=31.9m (i hope you made a mistake on the answer you put)

c. The time taken for ball to fall to 1m above ground is calculated as follows.

s=ut+0.5at^2
1=25t-4.9t^2
so t=0.0403 or 5.0617s.
The first time is when the ball passes 1m on the way up so we need the second value.

Horizontally, the ball has travelled a distance:
s=ut
=10ms^-1 * 5.0617s
=50.6m

The mark scheme had 32.9m but it's only answers, not solutions
It seems a little dodgy to me thou (the ms) cheers for parts b n c

Turn on thread page Beta
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: December 26, 2004
Today on TSR

'I missed the UCAS deadline!'

Here's what to do next...

University open days

• University of East Anglia
All Departments Open 13:00-17:00. Find out more about our diverse range of subject areas and career progression in the Arts & Humanities, Social Sciences, Medicine & Health Sciences, and the Sciences. Postgraduate
Wed, 30 Jan '19
• Solent University
Careers in maritime Undergraduate
Sat, 2 Feb '19
• Sheffield Hallam University
City and Collegiate Campus Undergraduate
Sun, 3 Feb '19
Poll
Useful resources

Make your revision easier

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

Create your own Study Planner

Never miss a deadline again

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

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