Question

7.
A force (i+2) – 3k) N displaces a body from position vector of point (5, 2,- 4)m to the position vector
of point (2, 4, -1) m. The work done is
(A) - 8J
(B) 9J
(C) 10J
(D) 7J​

Answer 1

the above answer is the explanation