Question

Impulse has the same unit as that of :

• A. force
• B. pressure
• C. momentum
• D. moment of force

Answer 1

The correct option is C

momentum

Option C is the correct answer:

The explanation for the correct answer:

Option C:

1. Impulse is the change in the momentum of an object.
2. So, the unit of impulse is the same as the unit of momentum.
3. $$\begin{gathered} Impulse=changeinmomentum \\ =P_f-P_i \\ =△P \end{gathered}$$
4. $$\begin{gathered} △P=m(V-U) \\ =kgm/s \end{gathered}$$
5. (Where m is the mass of the object V and U is the final and initial velocity of the object.)

So, the unit of impulse=change in momentum.

The explanation for the incorrect answer:

Option A:

Force: SI unit of force is Newton.

Option B:

Pressure: SI unit of pressure is Pascal.

Option D:

Moment of force: SI unit of moment of force is Newton -meter.

Hence option (C) is correct.