## College Physics (4th Edition)

We can find the mass of the sack in kg: $mg = weight$ $m = \frac{weight}{g}$ $m = \frac{19.8~N}{9.8~m/s^2}$ $m = 2.0~kg$ We can convert the mass to units of pounds. $(2.0~kg)\times \frac{2.2~pounds}{1~kg} = 4.4~pounds$