Question
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are
  1. Impulse, pressure and area.
  2. Impulse and area.
  3. Area and gravitational potential.
  4. Impulse and pressure.

Answer

  1. Impulse and area.

Explanation:

We know that impulse J = F. $\Delta\text{t}=\Delta\text{p},$ where F is force, At is time duration and Ap is change in momentum. As $\Delta\text{p}$ 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.

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