A heavy box of mass 20 kg is placed on a horizontal surface . If coefficient of kinetic friction between the box and the horizontal surface is 0.25, calculate the force of kinetic friction Also calculate acceleration produced under a force of 98 N applied horizontally ?

Explanation

To solve the problem step by step, we will calculate the force of kinetic friction and then determine the acceleration produced under the applied force.

### Step 1: Calculate the Normal Force (N)
The normal force (N) acting on the box can be calculated using the formula:
\[ N = m \cdot g \]
where:
- \( m = 20 \, \text{kg} \) (mass of the box)
- \( g = 9.8 \, \text{m/s}^2 \) (acceleration due to gravity)
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