Force platform is a popular tool for locomotion (i.e., running) analysis in biomechanical research. If Shannon is asked to run through a force platform, the force exerted by the platform on her foot is recorded in the early phase of her stance during a running stride as: -180x + 600y + 60z, where +x = forward, +y = upward, and +z = lateral.
a. What was the magnitude of the resultant ground reaction force?
b. What was the magnitude of the resultant force acting in the sagittal plane?
c. What was the direction of the resultant force acting in the transverse plane?