an object of mass 2 kg is moved from infinity to point p .initially that object was at rest but on reaching p its its speed is 2m/s.the work done in moving that object is -4J.Then potential at p is
an object of mass 2 kg is moved from infinity to point p .initially that object was at rest but on reaching p its its speed is 2m/s.the work done in moving that object is -4J.Then potential at p is