Which of the following is the best example of kinetic energy? a book sitting on a bookshelf a golfer preparing to putt the ball a race car in position at the start line a satellite orbiting the earth

Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).