Question

A body moving along the x-axis of
a coordinate system is subjected to
a constant force F = 2i + j + 4k N.
What is the work done by this force
in moving the body through a
distance of 4 m along the x-axis?
(A) 8J
(B) 4 J
(C) 23
(D) None of the above​

Answer 1

ans= 8 J

work= F.S=(2i+j+4k).4i=8J