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In the figure here, a red car and a green car move toward each other in...

In the figure here, a red car and a green car 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 car is at xg = 215 m. If the red car has a constant velocity of 24.0 km/h, the cars pass each other at x = 44.8 m. On the other hand, if the red car has a constant velocity of 48.0 km/h, they pass each other at x = 76.6 m. What are (a) the initial velocity and (b) the (constant) acceleration of the green car? Include the signs.

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