Discuss two factors affecting frictional force

Explanation

### Step-by-Step Solution:

1. **Understanding Frictional Force**:
Frictional force is the resistance that one surface or object encounters when moving over another. It plays a crucial role in everyday activities, such as walking, driving, and holding objects.

2. **Factor 1: Nature of Surfaces in Contact**:
- The first factor affecting frictional force is the nature of the surfaces that are in contact with each other.
- Surfaces can be classified as smooth or rough.
...