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

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

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

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