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A body of mass (m) moving along a straig...

A body of mass (m) moving along a straight line covers half the distance with a speed of 2 m/s. The remaining half of the distance is covered in two equal tiem intervals with a speed of ` 3 ms^(-1)` and ` 5 ms^(-2)` respectively. The average speed of the particle for the entire journey is .

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