Velocity

Velocity is a fundamental concept in Physics that describes the speed and direction of an object. It is a vector quantity, meaning it has both magnitude (speed) and direction. The SI unit for velocity is meters per second (m/s).

Definition

Velocity is defined as the rate of change of displacement with respect to time. It can be calculated by dividing the displacement by the time taken. If the direction of motion is also given, then the velocity of the object is known.

Mathematical representation

Velocity is often represented in equations and mathematical models by the letter 'v'. The average velocity (v) of an object moving through a displacement (d) during a time interval (t) is described by the formula:

v = d / t

Types of velocity

There are two types of velocity: average velocity and instantaneous velocity. Average velocity is the total displacement divided by the total time taken. On the other hand, Instantaneous velocity is the velocity of an object at a particular point in time.

Relative velocity

Relative velocity is the velocity of an object as observed from a particular frame of reference. It is the vector difference between the velocities of the two objects.

See also

• Speed
• Acceleration
• Momentum
• Force

References

Velocity Resources
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