Suppose the block of the previous problem is pushed down the incine witas force of 4N. How far will the block move in the first two seconds after starting from rest? The mass of the block is 4 kg.

Explanation

To solve the problem step by step, we need to analyze the forces acting on the block and calculate the distance it will move in the first two seconds after starting from rest.

### Step 1: Identify the Forces Acting on the Block
The forces acting on the block on the inclined plane are:
- The gravitational force (weight) acting downwards: \( mg \)
- The normal force \( R \) acting perpendicular to the surface
- The applied force \( F = 4 \, \text{N} \) acting down the incline
- The frictional force \( f_k \) acting up the incline
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