Is it possible for the sum of the kinetic energy and potential energy of an object to change without work having been done on the object?
No, because the work-energy theorem states that work done on an object is equal to the change in kinetic energy, and change in KE requires a change in velocity; It is assumed that mass is constant
No, because the work-energy theorem states that work done on an object is equal to the sum of kinetic energy, and the change in KE requires a change in displacement; It is assumed that mass is constant
Yes, because the work-energy theorem states that work done on an object is equal to the change in kinetic energy, and change in KE requires a change in velocity; It is assumed that mass is constant
Yes, because the work-energy theorem states that work done on an object is equal to the sum of kinetic energy, and the change in KE requires a change in displacement; It is assumed that mass is constant