a cable lifts a 1200kg elevator at a constant velocity for a distance of 35m. what is the work done by a) the tension in the cable and b) the elevators weight

With i really need the correct answer!

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy. work depends on the square of the change in potential energy. work is equal to the negative of the change in kinetic energy. work is equal to the square of the change in kinetic energy

Find the mass by adding the numbers from the three sliders