A 45 kg object has a momentum of 225 kg-m/s northward. What is the object's velocity?
1 answer:
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When you have to convert a quantity you need to multiply by a fraction whose value is 1 but has different units of measurements.
In your case you have:
You will have two fractions: one that transforms grams into kilograms and one <span>that transforms</span> cm³ into m³. You need to position the quantities in such a way you can eliminate the original ones, therefore:
Now, you can make the calculations and you get:
= 
Therefore your answer is: 1000kg/m³
In your case you have:
You will have two fractions: one that transforms grams into kilograms and one <span>that transforms</span> cm³ into m³. You need to position the quantities in such a way you can eliminate the original ones, therefore:
Now, you can make the calculations and you get:
Therefore your answer is: 1000kg/m³