From a light-house an observer two ships A and B. Ship A proceeding towards north at a speed `20sqrt(2)` km//h and ship B proceeding towards north-east at a speed of 20 km//h. Find in which direction and at what speed the ship B would appear to move to an observer standing on the deck of the ship A.

Explanation

To solve the problem, we need to find the speed and direction of ship B as observed from ship A. Let's break down the solution step by step.

### Step 1: Define the velocities of the ships
- **Velocity of Ship A (V_A)**: Ship A is moving north at a speed of \(20\sqrt{2}\) km/h. In vector form, this can be represented as:
\[ V_A = 20\sqrt{2} \, \hat{j} \, \text{km/h} \]
where \(\hat{j}\) represents the north direction.
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