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A particle moving in a straight line covers half the distance with speed of `3 m//s`. The half of the distance is covered in two equal intervals with speed of `4.5 m//s and 7.5 m//s` respectively. The average speed of the particle during this motion is :

A

4.0 m/s

B

5.0 m/s

C

5.5 m/s

D

4.8 m/s

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A
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ALLEN-MOTION IN A PALNE-EXERCISE-2
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