Question

(b) The soldier is crossing a sandy desert.
Explain, stating the relevant Physics, why this soldier is at an advantage over another soldier
who has the same weight but smaller feet.
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Answer 1

Answer:

DUE TO surface area and pressure

Explanation:

let the soldier with larger feet be called soldier A and the soldier with smaller feet and same weight be called be soldier B

Soldier A walking in the sand has an advantage over soldier B  because the surface area of soldier A's foot is greater than that of soldier B's foot. Since they have the same mass, soldier A exerts lower pressure on the sand and hence can walk more easily on it.

(because 1 pa = 1 N / 1 m²)