What is the purpose of a valve?
2 answers:
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Answer:
v₀₂ = -2.67 m / s
Explanation:
Let's use the conservation of the moment, for this we define a system formed by the two cars.
Consider the north direction as positive and the subscript 1 will be used for car 1 and the subscript 2 for the second car
Initial instant. Before the crash
p₀ = -m₁ v₀₁ + m₂ v₀₂
Final moment. Right after the crash
p_f = (m₁ + m₂) v
p₀ = p_f
-m₁ + m₂ v_{o2} = (m₁ + m2) v_{f}
v₀₂ = +
let's calculate
v₀₂ =
v₀₂ = -2.67 m / s
the negative sign indicates that the carriage moves in the opposite direction of the temperies
Considering the definition of pressure, force will have the same units of pressure is multiplied by area.
<h3>What is pressure</h3>Pressure is defined as the force exerted per unit area.
In this way, for the same force, the pressure is inversely proportional to the surface: this means that, for the same force, the smaller the surface, the greater the pressure exerted and the more the body will be deformed.
That is, pressure is defined as the force exerted perpendicularly on a surface and is expressed mathematically as:
In the International System of Units, the unit of pressure is the pascal (Pa). One pascal is the pressure exerted by a force of 1 N distributed over an area of 1 m².
Then, the definition of force can be expressed as:
Force= Pressure× Area
<h3>Summary</h3>In summary, force will have the same units of pressure is multiplied by area.
Learn more about pressure and force:
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