Question

A constant force -6i-2j-1k moves an object along a straight line from point (8, -6, -9) to point (-5, 3, 3).

how do you find the work done

Answer 1

Take the scalar "dot" product of the force vector and the displacement vector. The displacement vector is
-13i +9j +12k

(-13)*(-6) + 9*(-2) + 12*(-1)
= ?