What mechanical paramater has a unit corresponding to expression

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helpme1
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Homework Statement


What mechanical parameter has a unit corresponding to expression N2 sec3/kgm ?


Homework Equations


a.impulse b.time c.velocity d.energy e.force


The Attempt at a Solution


i need your help. please take a look this.
thanks in advance.
 

Discussion

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do you know what a Newton is in SI units?
 
helpme1 said:
Force.

no, a Newton is the unit of force but a Newton can be broken down into simpler units of measure. this is the equivalency:

[tex][N]=[\frac{Kgm}{s^2}][/tex] -(these are the units for F=ma)

This should make sense to you, F=ma. "m" is measured in Kg, "a" is measured in m/s^2. when you multiply the two you get a unit of Newton
 
srmeier said:
no, a Newton is the unit of force but a Newton can be broken down into simpler units of measure. this is the equivalency:

[tex][N]=[\frac{Kgm}{s^2}][/tex] -(these are the units for F=ma)

This should make sense to you, F=ma. "m" is measured in Kg, "a" is measured in m/s^2. when you multiply the two you get a unit of Newton

thanks for your response. but then the answer of question is Force ? right.
 
no, plug the SI expression for a Newton into the original expression, what units are left?
 
ah thanks! :) you are helpful. i did it by thinking. at last i did a physics test my own (of course with your help)