Question

A force of magnitude 2 units in the direction
of vector 2î+j-2k is displacing the particle
from the point (1,-1,-1) to (3, 2, 1). Find the
work done by the force.​

Answer 1

Step-by-step explanation:

we will use the dot product here

at first find out the net displacement

it comes out to be final position minus initial position

(2,3,2)

dot product of force and displacement

4+3+-4=3joule