Physics

Problem

A car travels for

6\,\text{min}

60\,\text{km/h}

and then for

4\,\text{min}

30\,\text{km/h}

. Calculate its average speed for the entire

10\,\text{min}

journey. a)

45\,\text{km/h}

40\,\text{km/h}

48\,\text{km/h}

42\,\text{km/h}