Final answer:
Adding 100g to each shoe increases the pressure and force on the foot during walking or jogging, as the feet need to absorb more weight with each step. Ample padding in footwear is crucial to mitigate these forces and minimize potential injuries.
Step-by-step explanation:
Adding an additional 100g to each shoe increases the weight that the legs and feet have to support during downhill walking. Since weight puts a tremendous amount of pressure and force on the foot, especially during running or walking, this extra weight can increase the stress on the foot. Each footstrike can exert a force of up to 2.5 times your body's weight. Therefore, adequate cushioning and support are important to absorb this force and protect the foot and leg. This is why jogging on soft ground and wearing padded shoes reduces the pressures to which the feet and legs are subjected. Furthermore, when discussing the impact forces involved in jogging, it is noted that jogging on hard surfaces with insufficiently padded shoes can lead to larger forces on the feet and legs. To contextualize, when a leg with a mass of 13.0 kg and a speed of 6.00 m/s stops in a short distance of 1.50 cm, the force required is significant, and we must also consider the additional weight of the jogger's body when calculating the total force experienced by the leg and foot.