Physics

Problem

A car C drives

7\,\text{m/s}

east relative to a truck T. The truck moves with an unknown speed relative to a bus B. The bus travels

15\,\text{m/s}

east relative to the ground G. If an observer on the ground measures the car’s speed to be

2\,\text{m/s}

west, what is the truck’s speed relative to the bus? a)

24\,\text{m/s}

east b)

9\,\text{m/s}

west c)

24\,\text{m/s}

west d)

6\,\text{m/s}

west