question_answer

  Figure shows, in order, five stages of an athlete successfully performing a pole-vault. Describe the energy changes which take place during the performance of the pole-vault, from the original stationary position of the pole-vaulter before the run-up, to the final stationary position after the vault.

Answer:

                  Standing              Chemical energy Run-up                 Kinetic energy Pole bent            Elastic energy Rise                        Potential energy gained Fall                         Kinetic energy gained On mat                  Heat or sound energy