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## Homework Statement

A constant force of 1i - 5j -8k moves (1,-4,2) (-3,2,-1), what is the work done on the particle?

## Homework Equations

Avector*Bvector=ABsinθ

?? I think?

## The Attempt at a Solution

I really am quite lost... but I found the coordinates for the position vector...

(-3-1)i + (2--4j) + (-1-2)k and the magnitude of the position vector is 7.81

so the unit vector is -.512i + .768j -.384k... am I on the right track here?