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robin singh

· started a discussion

· 1 Months ago

Probably wrong (Question: 189784.0 )

Pressure = Force/Area. Force is a vector. So pressure has to be a vector

Question:

Which of the above is/are vector quantities? 

Energy, Power, Pressure, Impulse, Temperature, Gravitational Potential

Options:
A) Impulse only  
B) Impulse and Pressure only
C) Impluse, Temperature and Pressure
D) Gravitational Potential
Solution:
Ans:(a) In the given quantities, only Impulse is a vector quantity and remaining are scalar quantity. 

Since force is a vector quantity, impulse is also a vector in the same direction. Impulse applied to an object produces an equivalent vector change in its linear momentum, in the same direction.

Knowledge Expert

· commented

· 1 Months ago

Pressure is a scalar quantity;

Pressure is defined as force per unit area i.e,

P=F/A

But we know that force is a vector quantity and so what makes pressure a scalar quantity is the fact that it is the component of force along the direction of area that is taken into account while defining pressure.

Thus the direction of quantities involved remain fixed and pressure becomes a scalar quantity.
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