Which of these physical quantities varies as an object changes its velocity? a. pressure b. mass c. weight d. momentum

Option (D) is the correct answer.

Explanation:

Momentum means the ability of an substance or object to continue moving. In general, momentum is the product of mass and velocity. Momentum is a physical quantity.

Mathematically,         p = m × v

where,               p = momentum

                         m = mass

                         v = velocity

Momentum and velocity of an object can change whereas mass or weight is a fixed quantity, so mass will not change whether the object will move or not.

Therefore, when an object changes its velocity then there will also be change in its momentum.