Which of the following quantities are units of impulse? (There could be more than one correct choice.)
A) $k q \cdot m^{2} / s^{2}$

B) $N \cdot s$
C) $\mathrm { kg } \cdot \mathrm { s } / \mathrm { m }$
D) $\mathrm { kq } \cdot \mathrm { m } / \mathrm { s }$
E) $\mathrm { N } \cdot \mathrm { m }$

Question

Which of the following quantities are units of impulse? (There could be more than one correct choice.) 
A) $k q \cdot m^{2} / s^{2}$

B) $N \cdot s$
C) $\mathrm { kg } \cdot \mathrm { s } / \mathrm { m }$
D) $\mathrm { kq } \cdot \mathrm { m } / \mathrm { s }$
E) $\mathrm { N } \cdot \mathrm { m }$

Quizplus · Accepted Answer

Impulse is the change in momentum of an object. Momentum is mass times velocity, so impulse is mass times change in velocity. The SI unit of mass is the kilogram (kg), the SI unit of velocity is the meter per second (m/s), and the SI unit of time is the second (s). Therefore, the SI unit of impulse is the kilogram meter per second (kg m/s).Choice B is in SI units, so it is a unit of impulse. Choice D is also in SI units, so it is a unit of impulse.

Which of the Following Quantities Are Units of Impulse? (There kq⋅m2/s2k q \cdot m^{2} / s^{2}kq⋅m2/s2

Which of the Following Quantities Are Units of Impulse? (There $k q \cdot m^{2} / s^{2}$