What happens to the kinetic energy and potential energy between point A and point B? (3 points)

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Which describes increasing the efficiency of energy resource