Which statement best describes the formation of igneous rocks? a. layers of dirt and other rocks are pressed together to form igneous rocks b. molten material cools and hardens to form igneous rocks c. elements in the earth form igneous rocks by compacting them together d. wind erodes mountains into small igneous rocks

The answer is b because It describes the transformation of molten materials

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