Physics

Problem

A cyclist rides in a straight line for

600\,\text{m}

. The first

300\,\text{m}

are covered at

5\,\text{m/s}

and the remaining

300\,\text{m}

10\,\text{m/s}

. What is his average speed for the entire journey? a)

7.5\,\text{m/s}

10\,\text{m/s}

6.7\,\text{m/s}

6.25\,\text{m/s}