Twin space probes have a mass of 722 kg each. If the gravitational force between the two space probes is 8. 61 × 10–16 N, what is the distance between them? 7. 48 × 103 meters 2. 00 × 105 meters 4. 04 × 1010 meters.

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

Answer mechanical energy;