Homework Help: Physics

Posted by Henry on Thursday, September 3, 2009 at 9:44pm.

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 car is at xg = 220 m. If the red car has a constant velocity of +20 km/h, the cars pass each other at x = 45.5 m, and if it has a constant velocity of +40 km/h, they pass each other at x = 77.6 m.

a.) What is the initial velocity of the green car?

b.)What is the acceleration of the green car?

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