The escape speed from the Earth is 1.12 x 104 ms-1, so that a gas molecule travelling away from the earth near the boundary of the earth's atmosphere would, at this speed,
be able to escape from the earth's gravitational field and can be lost from the
atmosphere. At what temperature is the rms speed of oxygen molecules, and helium
atoms equal to Vrms = 1.12 x 104 ms-t? [Use the periodic table to help you

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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