- #1

Ash_Sdr

## Homework Statement

Given the Speed of vehicle at any instant (say 30 meters/s) and Heading of a vehicle (say 270 degrees ) , how can i find the velocity components which is Vx and Vy .

Lemme tell you about the Heading ...This is the convention..

I don;t know if this pic is viewable or not... So Heading is with true north... which means that , if vehicle is facing NORTH --- heading is 0 degrees (or) 360 ... if its facing East , its 90 degrees , if its facing South , its 180 and If its facing West , its 270...

The X,Y convention is ... X is Vertical Axis and Y is Horizontal...

## Homework Equations

Speed = sqrt(Vx^2 + Vy^2)

## The Attempt at a Solution

Two possible Solutions which i can think of...

Since X is longitudinal and Y is Lateral ... Vx = Speed * sin(Heading)

Vy = Speed *cos(Heading)

and Second solution is to use delta heading

Vx = Speed * sin(Heading2 - Heading1)

Vy = Speed *cos(Heading2 - Heading1)

but I am not getting good results with these... can anyone tell me what I am doing wrong