No, if the instantaneous velocity of an object remains constant, its speed cannot change. Here's why:

* Velocity is a vector quantity, meaning it has both magnitude (speed) and direction.

* Speed is the magnitude of velocity. It's simply how fast an object is moving.

Therefore, if the instantaneous velocity is constant, both the speed and direction of motion are unchanging.

Example:

Imagine a car traveling at 60 mph due east. Its velocity is constant because both its speed (60 mph) and direction (east) are not changing. Even though the car is in motion, its speed remains the same.