# Edexcel AS Maths Mechanics Vectors and Motion Notes

Just some notes I made for myself to remember the principles and the key points for vectors and motion.

I hope you find this useful. I should be posting up the 'Statics, Dynamics and Moments' notes up soon, too.

- Created by: fmPerkins
- Created on: 29-04-10 14:18

First 157 words of the document:

M1 Vectors and Kinematics Key Notes

VECTORS

Scalar Magnitude

Vector Magnitude and Direction

Vectors are added by using the triangle law of

addition. In other words, you draw the vectors

from `tip-to-tail' and draw in the resultant.

In terms of i and j notation,

Resultant = Xi + Yj

If particle A has position vector rA and particle B has position vector rB, then the

position vector of B relative to A is rB - rA

If particle A has velocity vector vA and particle B has velocity vector vA, then

the velocity vector of B relative to A is vB - vA

KINEMATICS

For a particle with constant acceleration:

For Velocity-Time graphs, the AREA under the graph

in a given time interval is the DISTANCE travelled.

The GRADIENT of the graph is the ACCELERATION

of the moving particle.

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