An object of mass 0.550 kilogram is lifted from the floor to a height of 3.5 meter at a constant speed. Obtain how much work is done by the lifting force? Obtain how much work is done by the Earth on the object? Find the net work done on the object? Find the change in kinetic energy of the object? If the object is released from rest after it is lifted, find its kinetic energy before it hits the floor? What is its velocity?