A stone of mass `500g` is thrown with a velocity of `20ms^(-1)` across the frozen surface of a lake. It comes to rest after travelling a distance of `10*1km`. Calculate force of friction between the stone and frozen surface of lake.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Convert the mass of the stone to kilograms
The mass of the stone is given as 500 grams. We need to convert this to kilograms since the SI unit of mass is kilograms.

\[ \text{Mass (m)} = 500 \text{ g} = \frac{500}{1000} \text{ kg} = 0.5 \text{ kg} \]
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