In the given physical quantities which is not a relative quantity?

Option A: Time In classical or Newtonian physics, time is considered an absolute quantity. All observers measure the same time interval regardless of their state of motion. It does not depend on any reference frame in basic physics, which makes it the correct answer.

Option B: Acceleration Acceleration is a relative quantity because it is the rate of change of velocity, and velocity itself depends on the observer’s frame of reference. Different observers may record different acceleration values depending on their motion.

Option C: Velocity Velocity is highly relative since it directly depends on the chosen reference frame. For example, a person walking inside a moving train has a different velocity relative to someone inside the train compared to an observer standing outside on the platform.

Option D: Momentum Momentum is defined as the product of mass and velocity. Since velocity is relative, momentum is also relative. Its value changes according to the observer’s frame of reference.

Conclusion: Among the given quantities, the one which is not a relative quantity in classical physics is Time. Therefore, the correct answer is Option A: Time.