[" done."],[" A force "vec F=(5hat i+4hat j)" newton displaces a body "],[" through "vec d=(3hat j+4hat k)" metre in "3s" .Find the "],[" power."]

Find the angle between force vec F = ( 5 hat i + 4 hat j + 5 hat k) unit and displacement vec d = (3 hat i + 4 hat j - 3 hat k) unit. Also find the projection of vec F on vec d.

Find the angle vetween force vec F =(3 hat I + 4 hat j -5 hat k) and displacement vec d =(5 hat I + 4 hat j + 3 hat k) unit. Also find the projection of vec F along vec d .

Find the angle between force vec F =(3 hat I + 4 hat j -5 hat k) and displacement vec d =(5 hat I + 4 hat j + 3 hat k) unit. Also find the projection of vec F and vec d .

Find the angle between force vec(F) =(3hat(i)+4hat(j)-5hat(k)) unit and displacement vec(d)=(5hat(i)+4hat(j)+3hat(k)) unit , Also find the projection of F on d .

A body is displaced from vec r_(A) =(2hat i + 4hatj -6hat k) to vecr_(B) = (6hat i -4hat j +3 hat k) under a constant force vec F = (2 hat i + 3 hat j - hat k) . Find the work done.

If vec F =2 hat i + 3hat j +4hat k acts on a body and displaces it by vec S =3 hat i + 2hat j + 5 hat k , then the work done by the force is