Question

the velocity of an object at rest is considered to beuniform

Answer 1

When a body is at rest the velocity of the body remains to be 0m/s at every instant. so as the velocity does not change we can say that the body is havimg an uniform velocity

Answer 2

According to me it is considered uniform because the velocity of a object at rest is 0 and it stays 0 until it starts moving and as there is no no acceleration or deacceleration it is considered to be in uniform motion.