# Uncertainty of Coefficient#

The drag force on an object of interest can be accurately modelled as $$\vec{D}$$ = -$$b\vec{v}$$ such that its terminal velocity in free fall is given by $$v_T$$ = $$mg/b$$. Lorenzo measures $$m$$ = 117 $$\pm$$ 2 $$g$$ and $$v_T$$ = 1.6 $$\pm$$ 0.2 $$m/s$$. Based on these measurements Lorenzo determines the drag coefficient to be $$b$$ = 0.55 $$kg/s$$.

## Part 1#

What is the uncertainty in your determination of $$b$$?

• $$\pm$$ 0.14 $$kg/s$$
• $$\pm$$ 0.08 $$kg/s$$
• $$\pm$$ 0.01 $$kg/s$$
• $$\pm$$ 0.78 $$kg/s$$