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[" Two cars "A" and "B" are at rest at s...

[" Two cars "A" and "B" are at rest at same point initially.If "A" starts with uniform velocity of "40m/sec" and "B],[" starts in the same direction with constant acceleration of "4m/s^(2)" ,then "B" will catch "A" after how much "],[" time "],[[" (a) "10sec," (b) "20sec," (c) "30sec," (d) "35sec]]

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