# Mechanics: Scalars and Vectors

Not what you're looking for? Search our solutions OR ask your own Custom question.

1. Given the following 3 vectors, all of which lie in the horizontal plane, (see attachment for list of vectors), find:

(a) 3A-B

(b) 1) A?B 2) B?A

(c) 1) A*B 2) B*A

(d) (5A-6B+4C)?(B*C-A*B)

*(Please see attachment for complete question and equations)

Â© BrainMass Inc. brainmass.com May 24, 2023, 1:34 pm ad1c9bdddfhttps://brainmass.com/math/vector-calculus/mechanics-scalars-vectors-26715

#### Solution Preview

Please see attached file

For the example

A Â· B = |A| |B| cos ( A - B) = 3 Ã— 5 cos -20Â°, cos -20Â° is not equal to cos(20),

Then A Â· B=3*5*0.9397=14.1.

The calculator uses radian of the angle instead of degree.

a. Given the following ...

#### Solution Summary

This shows how to perform operations on vectors.

$2.49