A stone of 1 kg is thrown with a velocity of `20ms^(-1)` across the frozen surface of a lake and comes to rest after travelling a distance of 50 m. What is the force of friction between the stone and the ice ?

Explanation

To solve the problem, we will follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Data**:
- Mass of the stone (m) = 1 kg
- Initial velocity (u) = 20 m/s
- Final velocity (v) = 0 m/s (since the stone comes to rest)
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