A cyclist travels due east in and then returns to the starting point along the same…

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A cyclist travels

12\,\text{km}

due east in

0.5\,\text{h}

and then returns to the starting point along the same road in

0.3\,\text{h}

. What is the magnitude of the cyclist's average velocity for the whole trip? (a)

15\,\text{km/h}

(b)

0\,\text{km/h}

(c)

30\,\text{km/h}

(d)

24\,\text{km/h}