You measure the following quantities:

A = (1.0 ± 0.4) m

B = (2.0 ± 0.2) m

C = (2.0 ± 0.5) m s⁻¹

D = (0.20 ± 0.01) s

Calculate the result and its uncertainty for each of the following expressions. You may express your uncertainty either as an absolute value or as a percentage.

a. A + B

b. B − A

c. C × D

d. B/D

e. A²

f. 2 × A

g. The square root of (A × B). (Recall that the square root of x can be written as x^½.)