Discuss why it is less tiring to move on skates as compared to walking on the road.

Explanation

### Step-by-Step Solution:

1. **Understanding the Scenario**:
- We have two individuals: one is walking and the other is skating, both covering the same distance of 1 km on the same surface.

2. **Defining Work**:
- Work is defined as the product of force and displacement. The formula for work is:
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