You are Here: Home >< Maths

# m1 urgent help Watch

1. A particle P moves in a straight line with constant velocity. Initially P is at the point A with position vector (2i-j)m relative to a fixed origin O, and 2 seconds later it is at the point B with position vector (6i+j)m.

a) Find the velocity of P, the velocity is 2i+j

b) Find, in degrees to 1 d.p., the size of the angle between the direction of motion of P and the vector i.

Three seconds after it passes B the particle P reaches the point C.

c) Find, in m to 1 d.p., the distance OC.
2. (Original post by yeah1106)
A particle P moves in a straight line with constant velocity. Initially P is at the point A with position vector (2i-j)m relative to a fixed origin O, and 2 seconds later it is at the point B with position vector (6i+j)m.

a) Find the velocity of P, the velocity is 2i+j

b) Find, in degrees to 1 d.p., the size of the angle between the direction of motion of P and the vector i.

Three seconds after it passes B the particle P reaches the point C.

c) Find, in m to 1 d.p., the distance OC.
did you need help with all of it? or a specific bit?
(Original post by thefatone)
did you need help with all of it? or a specific bit?
4. (Original post by yeah1106)
Sketch and use triangles/trigonometry.
5. (Original post by yeah1106)
The direction of motion is the velocity vector.

So draw the vector i (horizontal line from the origin) and the vector 2i+j and use trig to find the angle between them.

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: April 11, 2016
Today on TSR

### Am I pregnant?

...or just paranoid?

### A robot wrote Harry Potter?

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.