Question

Which unit will the operation 5s+2s have?
A) s
B) s^2
C)No unit
D) Not valid

Answer 1

The operation 5s + 2s results in 7s, which retains the same unit of 's'. There is no creation of new units or square units, and the operation is indeed valid.

Step-by-step explanation:

The operation 5s + 2s involves the addition of two terms that both have the same unit, represented by s. Since both terms are being added together, they must have the same unit to be a valid operation. Hence, when we add 5s and 2s, we simply add the numerical coefficients (5 and 2) and keep the common unit s. The resultant operation will have the unit s, not s2, nor will it be unitless or invalid. The correct operation yield is 7s, which means the operation has a unit of s.