A particle travels for half of the time with constant speed

PHYSICS · Subjective · CBSE · Physics · Motion · Motion

Problem

A particle travels for half of the time with constant speed

2\text{ m s}^{-1}

. In the remaining half of the time, it travels

\frac14

of its distance at constant speed

4\text{ m s}^{-1}

and

\frac34

of its distance at

6\text{ m s}^{-1}

. Find its average speed during the complete journey.

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