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Physics Work,Power & Energy Level: High School

The picture shown in "click here" consist of eight cars that are moving along horizontal roads at specified speeds. Also given are the masses of the cars. All of the cars are the same size and shape, but they are carrying loads with different masses . All of these cars are going to be stopped by plowing into identical barriers . All of the cars are going to be stopped by the same constant force by the barrier. Rank these situation from greatest to least on the basis of the stopping distance that will be needed to stop the cars with the same force . That is , put the first car that requires the longest stopping distance and put last the car that require the shortest distance to stop the car with the same force. Longest 1--------2---------3----------4----------5----------6-----------7----------8---------- Shortest or , all the cars requires the same distance.-------------- Explain your reasoning