Δt = t₂ - t₁

Where:

* Δt represents the change in time (often called "delta t")

* t₂ is the final time

* t₁ is the initial time

Example:

If a car starts moving at 10:00 AM (t₁ = 10:00 AM) and stops at 11:30 AM (t₂ = 11:30 AM), the change in time is:

Δt = 11:30 AM - 10:00 AM = 1.5 hours

Important Note:

* Time is a scalar quantity, meaning it only has magnitude (amount) and not direction.

* The change in time is always positive, as it represents the duration between two time points.