SP1 i) Convert the following quantities to the values requested. (a) 12 N to lbf (b) 3 ft to m (c) 61F to C (d) 70 mph to m/s and km/h. A force is applied to a fixed mass of 40 lbm which causes the mass to accelerate at 50 in/s2. What is the value of the force, in lbf? The density of a liquid is 55 lbm/ft3. How large, in m3, will a container have to be to hold 4 lbm of the liquid?