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

M1 help please! watch

Announcements
1. A particle has velocity (6t+1)i + (3t-5)j
Find the value of t for which the speed of the particle is at its minimum

Many thanks!

ps the answer is t = 1/5
2. you have been given the horizontal and vertical components of velocity, can you see how drawing a triangle might help you?
3. (Original post by Rubgish)
you have been given the horizontal and vertical components of velocity, can you see how drawing a triangle might help you?
thank you
4. your missing out part of the question....

most likely the accleration or ssomething
5. (Original post by snoopyx)
thank you
Well, the horizontal and vertical components of velocity are at right angles to each other, so to find the speed, you can use pythagoras on them. (hor vel)^2 + (vert vel)^2 = (speed)^2 This should give you a quadratic equation for speed in terms of t which you can find the minimum of.

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: May 22, 2010
Today on TSR

Four simple steps to get an A*

Here's all you have to do

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
• Aston University
Wed, 30 Jan '19
• Solent University
Careers in maritime Undergraduate
Sat, 2 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