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Question
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are ______.
Options
Impulse, pressure and area
Impulse and area
Area and gravitational potential
Impulse and pressure
Solution
Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge, temperature, area. Out of these, the only vector quantities are impulse and area.
Explanation:
We know that impulse J = F. ∆t = ∆p, where F is force, At is the time duration and Ap is changing in momentum. As ∆p is a vector quantity, hence impulse is also a vector quantity. Sometimes the area can also be treated as the vector direction of the area vector is perpendicular to its plane.
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