Question

Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are

• A. Impulse, pressure and area
• B. Impulse and area
• C. Area and gravitational potential
• D. Impulse and pressure

Answer 1

The correct option is B Impulse and area

We know that impulse $J=F.\Delta t=\Delta p$, where $F$ is force, At is time duration and $Ap$ is change in momentum. As $\Delta p$ is a vector quantity, hence impulse is also a vector quantity. Sometimes area can also be treated as vector direction of area vector is perpendicular to its plane.