Monday

January 26, 2015

January 26, 2015

Posted by **vectors?** on Sunday, January 23, 2011 at 10:06pm.

- physics -
**Damon**, Sunday, January 23, 2011 at 10:17pmA vector has both magnitude and direction. A good example is the difference between speed and velocity.

You can measure speed with just a speedometer, but for velocity you need both the speedometer and a compass.

When you add vectors you must take account of both their speeds and directions.

One way is graphically using the sum as the diagonal of a parallelogram with the sides being the two vectors.

Another way which is much more suited to computation is to find the components of both vectors in somme perpendicular axis system containing the vecors. That works because perpendicular vectors are "othogonal", changing a component in one of the axis directions does not affect the component on the other axis.

Then components of the to vectors may be added on each axis and a resultant found from the results.

In such a system the component of a vector along an axis is the magnitude of the vector times the cosine of the angle between vector and axis.

**Answer this Question**

**Related Questions**

12th grade - prove that normal to plane containing 3 points whose position ...

Vectors - Two vectors, A and B, are added by means of vector addition to give a ...

URGENT - Vectors - Two vectors, A and B, are added by means of vector addition ...

physics [vectors] - The concept i get, but somehow i just can't execute this ...

Mamthematics - Vectors - a) If vector u and vector v are non-collinear vectors ...

physics - Suppose vector A=3i-2j, B= -i-4j and vector C are three vectors in xy ...

Physics - please check these: which of the following is an example of a vector ...

physics - Vector has a magnitude of 136 units and points 35.0 ° north of west. ...

PHYSICS VECTORS - 1. The problem statement, all variables and given/known data ...

maths - Given that vector c and vector d are non zero vectors such that vector c...