The diagram below shows the path of a student on a sled starting from rest at point W.
The student slides down a frictionless, snow-cwered hill past point Z which is at
ground level.
Which of the following statements best describes the energy of the student and
sled from point W to point Z?
a) The total energy at point W is less than at point 2.
b) The total energy at point W is greater than at point 2.
c) The potential energy at point W becomes all kinetic energy at point 2.
d) The kinetic energy at point W becomes all potential energy at point 2