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A toy car travels in a straight line and it is subject to a frication force therefore its speed is decreasing. Assume that the average speed of the car in the first second is vi and the average speed during the 2nd second is v2 and the average speed during the nth second is Vn. The relation between two successive speeds is: vn+1 = 0.9 vn If vi 1 m/sec, calculate the total distance that the car travels before coming to rest

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