Suppose that sound travels at a speed of 345 m/s on the evening of a
thunderstorm. There is a lightning strike some distance from your home.
The light reaches you nearly immediately. Yet the thunder is heard 4.5
seconds later. How many miles from your home did the lightning strike?
(1600 meters = 1 mile) *

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

The answer is periosteum