Question

Which of the Quantity consists of unit as kg-m/sec ?

• A. Speed
• B. Momentum
• C. Acceleration
• D. Impulse

Answer 1

Answer: (B), (D)

The correct options are
B Momentum
D Impulse

1. For Speed :

$v=\frac{distance}{time}=m/sec$

2. For Momentum :

$P=m\times v$

Units : $kg-m/sec$

3. For Acceleration :

$a=\frac{\Delta v}{\Delta t}=m/{sec}^2$

4. For Impulse :

$I=F\times \Delta t=\Delta p$

Units : $N-sec=(kg-m/{sec}^2)\times sec=kg-m/sec$

From above we can say that $Momentum$ and $Impulse$ have same unit as kg-m/sec.