Which of the following quantities are units of momentum? (There could be more than one correct choice.)
A) $\mathrm { N } \cdot \mathrm { S }$
B) $\mathrm { N } \cdot \mathrm { m }$
C) $\mathrm { kg } \cdot \mathrm { m } ^ { 2 } / \mathrm { s } ^ { 2 }$
D) $\mathrm { kg } \cdot \mathrm { s } / \mathrm { m }$
E) $\mathrm { kg } \cdot \mathrm { m } / \mathrm { s }$

Question

Which of the following quantities are units of momentum? (There could be more than one correct choice.) 
A) $\mathrm { N } \cdot \mathrm { S }$
B) $\mathrm { N } \cdot \mathrm { m }$
C) $\mathrm { kg } \cdot \mathrm { m } ^ { 2 } / \mathrm { s } ^ { 2 }$
D) $\mathrm { kg } \cdot \mathrm { s } / \mathrm { m }$
E) $\mathrm { kg } \cdot \mathrm { m } / \mathrm { s }$

Quizplus · Accepted Answer

Momentum is defined as the product of mass and velocity, which gives it the unit $\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}$ (choice E). Additionally, the unit $\mathrm{N} \cdot \mathrm{s}$ (choice A) is also a unit of momentum because a Newton ($\mathrm{N}$) is equivalent to $\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}^2$, and when multiplied by seconds ($\mathrm{s}$), the seconds cancel out one of the seconds in the denominator, resulting in $\mathrm{kg} \cdot \mathrm{m} / \mathrm{s}$.

Which of the Following Quantities Are Units of Momentum? (There N⋅S\mathrm { N } \cdot \mathrm { S }N⋅S

Which of the Following Quantities Are Units of Momentum? (There $\mathrm { N } \cdot \mathrm { S }$