Figure 2-28 shows a red car and a green car that move toward each other. Figure 2-29 is a graph of their motion, ; showing the positions xg0 : 270 m and xr0= -35.0 m at time t = 0. The green car has a constant speed of 20.0 m/s and the red car begins from rest. What is the acceleration magnitude of the red car?
