Question

What is the momentum of a man of mass $100\text{kg}$ when he walks with a uniform velocity of $2{\text{m s}}^{-1}$?

• A. $50{\text{kg m s}}^{-1}$
• B. $300{\text{kg m s}}^{-1}$
• C. $200{\text{kg m s}}^{-1}$
• D. $100{\text{kg m s}}^{-1}$

Answer 1

The correct option is C $200{\text{kg m s}}^{-1}$

Given:
Mass, $\text{m}=100\text{kg}$
Velocity, $\text{v}=2{\text{m s}}^{-1}$
Let the momentum be '$\text{p}$'.
$\text{p}=\text{mv}=100\times 2=200{\text{kg m s}}^{-1}$