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A particle moving in a straight line covers first half of the distance into two equal time intervals with speed of 2 m/s and 4 m/s respectively, and second half with speed of 5m/s. The average speed of the particle is

Answer» A particle moving in a straight line covers first half of the distance into two equal time intervals with speed of 2 m/s and 4 m/s respectively, and second half with speed of 5m/s. The average speed of the particle is


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