Answer the following: 125kg - 25m = ?

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Question: 125kg - 25m = ?

Option 1: No result
This choice aligns with the fact that you cannot subtract a measure of length (meters) from a measure of mass (kilograms) without a defined conversion. In standard arithmetic with units, subtracting dissimilar units yields an invalid operation, so no meaningful result is obtained.

Option 2: 100kg-m
This would imply a subtraction that results in a combined unit of kilogram-meter, which is not a standard unit for a difference between mass and length. The operation itself is inappropriate because it attempts to mix incompatible quantities, and there is no reasonable derivation that would yield kg·m from kg minus m.

Option 3: 100kg/m
Here the result is written as kilograms per meter, a unit that represents a ratio or density-like quantity, not a difference between mass and length. Since the original operation subtracts quantities that do not share a common dimension, producing a rate or density is not justifiable.

Option 4: 100kg.m
This option presents a unit kg·m, a product of mass and length, which does not correspond to a meaningful subtraction outcome either. Multiplying units (kg·m) does not arise from subtracting kg and m, so this is not a valid resulting unit for the given expression.

Overall, the core issue across the options is the mismatch of dimensions: kilograms (mass) and meters (length) cannot be subtracted in conventional physics or algebraic unit analysis. Therefore, the only sensible choice is the one that states there is no valid result for this expression.

FFP001 Practice Threshold Quiz 1 | LA001

Answer the following: 125kg - 25m = ?

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