A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x-axis. At time t=0, the red car is at xr=0 and the green is at xg=220m. If the red car has a constant velocity of +20km/h, the cars pass each other at x=44.0 m,and if it has a constant velocity of +40km/h, they pass each other at x=77.0m.
what is the initial velocity of the green car?m/s
what is the acceleration of the green car?m/s^2