Hello chandan,

Generally this term determined similarly to average velocity. Instantaneous velocity is the velocity of an object in motion at a specific point in time.  but we narrow the period of time so that it approaches zero. If an object has a standard velocity over a period of time, its average and instantaneous velocities may be the same. The formula for instantaneous velocity is the limit as t approaches zero of the change in d over the change in t.

Hope it helps
All the best!

instantaneous velocity is the velocity of an object in motion at a specific point in time. This is determined similarly to average velocity , but we narrow the period of time so that it approaches zero. If an object has a standard velocity over a period of time, its average and instantaneous velocities may be the same.
it is given by v= ds/dt where, s id the distance and t is time.

refer to these video:

https://www.youtube.com/watch?v=uXHQcRddun4

https://www.brightstorm.com/science/physics/linear-and-projectile-motion/physics-instantaneous-velocity/

Hello Chandan Kumar,

Instantaneous velocity is the velocity of the boday at a particular instance of time.It is the rate of change in the displacement of the body at a particular instance.It is calculated by finding the time derivative of the displacement.You can also say that when a body is moving with constant velocity ,average velocity is equal to instantaneous velocity.Hope this answer helps.Thank You