All ground reaction forces were measured in Newtons. You will notice ground reaction data, for one stance phase, for two people. Subject 1 has a mass of 54 kg and subject two has a mass of 78 kg. First, create one line graph showing the vertical ground reaction force traces for each subject throughout time (one graph total with data from both subjects on it). Next, what are each subject's peak vertical ground reaction forces? Which subject has the greatest vertical ground reaction force? Next, normalize the vertical ground reaction force peaks to units of body weight. What are these values for each subject? Which subject has the greatest vertical ground reaction forces normalized to body weight? Next, create one line graph showing the anteroposterior ground reaction force traces for both subject (data for both subjects will be on the same graph). Finally, calculate the breaking and propulsive impulse for each subject. Is subject 1 speeding up, slowing down, or maintaining running speed? Is subject 2 speeding up, slowing down, or maintaining running speed?

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