(a)Compare the changes in total mechanical energy in walking and running. Specifically, consider what happens as your front foot lands on the ground in each case. What happens to the total mechanical energy while walking? What happens while running?
(b) how can you explain this difference between running and waking in total mechanical energy as the front foot lands in terms of forces and work>( hint: think about the definition of work, and how the shape of your leg changes when you run).