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

Question

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 = 220 m. If the red car has a constant velocity of 22.0 km/h, the cars pass each other at x = 43.7 m. On the other hand, if the red car has a constant velocity of 44.0 km/h, they pass each other at x = 76.4 m. What are (a) the initial velocity (in km/h) and (b) the (constant) acceleration (in m/s2) of the green car? Include the signs.

Explanation / Answer

one of the possible reasons you did wrong is you forgot to change to a same unit. 20 km/hr = 50/9 m/s find the time when they pass each other 43.5 / (50/9) = 7.83 secs red car = (50/9) (7.83) green car = 0.5(a)(7.83)

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