Momentum is defined as the quantity of motion possessed by a body. It depends on both the mass and velocity of the body.
Momentum of a body is the product of its mass and velocity.
Momentum (p) = mass (m) × velocity (v)
The SI unit of momentum is kg m s-1.
Momentum is a vector quantity because it has both magnitude and direction. The direction of momentum is the same as the direction of velocity.
Momentum of a body changes if either its mass or velocity changes.
Q1. Momentum of a body depends on: A) Mass only B) Velocity only C) Mass and velocity D) Acceleration Answer: C Q2. The formula for momentum is: A) p = m + v B) p = m / v C) p = m × v D) p = v / m Answer: C Q3. SI unit of momentum is: A) kg m s⁻¹ B) kg m s⁻² C) N s D) Joule Answer: A Q4. Momentum is a vector quantity because it has: A) Only mass B) Only velocity C) Magnitude and direction D) Energy Answer: C Q5. If velocity of a body becomes zero, its momentum becomes: A) Maximum B) Minimum C) Zero D) Infinite Answer: C Q6. A fast-moving light object and a slow-moving heavy object have same momentum when: A) Their masses are equal B) Their velocities are equal C) Product of mass and velocity is equal D) Their accelerations are equal Answer: C Q7. Which of the following will increase momentum of a body? A) Decrease in mass B) Decrease in velocity C) Increase in mass or velocity D) Change in direction only Answer: C Q8. Direction of momentum is the same as direction of: A) Force B) Acceleration C) Velocity D) Mass Answer: C
Momentum is the quantity of motion of a body and is equal to the product of mass and velocity.
Momentum (p) = m × v
SI unit of momentum is kg m s-1.
Momentum is a vector quantity. Its direction is the same as velocity.
Momentum changes when mass or velocity of a body changes.
MCQs are frequently asked on formula, unit, vector nature and comparison of momentum of objects.
