If a force is acting on a moving body in a direction perpendicular to the direction of motion what will be its effect on speed and direction of the body ?

Explanation

To analyze the effect of a force acting on a moving body in a direction perpendicular to its motion, we can break down the situation step by step.

### Step-by-Step Solution:

1. **Understanding the Scenario**:
- Consider a body moving in a straight line with an initial velocity. Let’s denote the velocity vector of the body as \( \vec{v} \) and the force acting on it as \( \vec{F} \), which is perpendicular to \( \vec{v} \).

2. **Direction of Force**:
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