Velocity

- Velocity is defined as the total distance covered by an object in a particular direction per unit interval of time. It is a vector quantity, which means it has both magnitude and direction.
- When we talk about the total distance covered by a body, we are considering the distance traveled in a specific direction within a given time interval.

Speed

- Speed, on the other hand, is the total distance covered by an object per unit interval of time. It is a scalar quantity, which means it only has magnitude and no direction.
- Speed does not take into account the direction of motion, it only considers the magnitude of the distance covered.

Momentum

- Momentum is a property of a moving object that depends on both its mass and velocity. It is defined as the product of an object's mass and its velocity.
- Momentum is a vector quantity because it takes into account both the direction and magnitude of the object's velocity.

Motion

- Motion refers to the change in position of an object over time. It can be described in terms of distance, displacement, speed, velocity, and acceleration.
- Motion can be in any direction and can be characterized by the change in position of the object with respect to a reference point.

Conclusion

- In this context, the total distance covered by a body in a unit interval of time in a particular direction is called velocity.
- Velocity is a vector quantity that considers both the magnitude of the distance covered and the direction of motion.
- It is important to understand the difference between velocity, speed, momentum, and motion as they are distinct concepts in physics.