Final answer:
The ratio of the force exerted on the foot by the ground to the person's body weight when a 67 kg person is running is roughly 3.5, meaning the impact can be up to 3.5 times the individual's body weight.
Step-by-step explanation:
Biomechanical research has provided insights into the forces exerted on the body during physical activities such as running. When calculating the ratio of the force exerted on a foot by the ground to the person's body weight, we consider a 67 kg person whose weight is the product of their mass and the acceleration due to gravity (67 kg × 9.81 m/s²). This results in a body weight of approximately 657.47 N (rounded to two decimal places).
The force reported during running applied to each foot is 2300 N. To find the ratio, we divide the ground force by the body weight:
2300 N / 657.47 N ≈ 3.5
Thus, the ratio of the force exerted on the foot by the ground to the person's body weight is roughly 3.5. This indicates that when running, the impact force on each foot can be up to 3.5 times the body weight of the person, which can have significant implications for joint health and the importance of proper footwear.