Two seconds after projection, a projectile is travelling in a direction inclined at `30^@` to the horizontal. After one more second, it is travelling horizontally. Find the magnitude and direction of its velocity.

Explanation

To solve the problem step by step, we will analyze the projectile motion of the object at the specified times and angles.

### Step 1: Understand the given information
- After 2 seconds, the projectile is at an angle of 30° to the horizontal.
- After 3 seconds, the projectile is moving horizontally.

### Step 2: Analyze the motion at 2 seconds
At 2 seconds, the projectile has both horizontal and vertical components of velocity. We denote:
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