A 120-kg mail bag hangs by a vertical rope 3.5 m long. A postal worker then displaces the bag to a position 2.0 m sideways from its original position, always keeping the rope taut.(a) What horizontal force is necessary to hold the bag in the new position?(b) As the bag is moved to this position, how much work is done(i) by the rope and(ii) by the worker?

momentum of soft ball three times less than baskey ball

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

i think its c if i'm wrong