A bus travels three successive stretches of a trip as follows:

PHYSICS · Subjective · CBSE · Physics · Motion · Motion

Problem

A bus travels three successive stretches of a trip as follows: (i)

30\,\text{km}

40\,\text{km/h}

, (ii)

20\,\text{km}

30\,\text{km/h}

, and (iii)

50\,\text{km}

50\,\text{km/h}

. Calculate the average speed of the bus for the whole

100\,\text{km}

journey.