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Two cars start off to race with velociti...

Two cars start off to race with velocities `u_(1)` and `u_(2)` and travel in a straight line with uniform accelerations `f_(1)`₁ and `f_(2)` . If the race ends in a dead heat, then the length of the course is `(2(u_(1)-u_(2))(u_(1)f_(2)-u_(2)f_(1)))/((f_(1)-f_(2))^(2))`

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