1. Calculate the momentum of a 17m^3 of air (density of 1.3kg/m^3) hitting a sky diver traveling 52 m/s.
2. The slope of a plot of final kinetic energy to initial kinetic energy is found to be 0.16 for the inelastic collision between a stationary cement truck of Mass 5,640 (kg) and a moving car of mass 1,923 (kg). What is the ratio (in decimal notation) of the final velocity of the two to the initial velocity of the car?