3) Two researchers, Ann and Malcolm, want to understand the biomechanical mechanism of the froghopper jump. Using photographs from a high-speed camera, each scientist sets their own coordinate system to follow the same froghopper, as shown in the figure below: Ann sets the reference on the ground while Malcolm sets the reference on the leaf. What is the change in the gravitational potential energy of the froghopper as measured by each scientist? as measured by Ann is greater. as measured by Malcolm is greater. Ann and Malcolm measure the same