Suppose that a constant force is applied to an object with a mass of 12kg, it’s creates an acceleration of 5m/s^2. the acceleration of another object produced by the same force is 4m/s^2, what is the mass of this object?

Which statement is true? a) the work done to lift an object 6 meters is greater than the gravitational potential energy it gains. b) the work required to push an object is less than the work required to pull an object the same distance. c) the work required to raise an object to a height is equal to the gravitational potential energy the object gains. d) the work done against gravity to lift an object straight up is greater than the work required to roll it up a ramp.