A wooden crate is being pushed to the right with a force of 76.2 N. The same crate is also being pushed to the left with a force of -109 N. In what direction will the crate move (choose left or right)? What is the magnitude of the net force on the crate? Finally, if the crate has a mass of 66.2 kg, what is its
acceleration as a result of the net force applied to it?

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j