Mathematics

Problem

A 1.8 m tall runner moves directly away from a 4.5 m streetlamp at

1.4\text{ m/s}

. What is the speed of the tip of the runner’s shadow (to the nearest hundredth of a meter per second) at that instant? a)

1.40\text{ m/s}

2.33\text{ m/s}

3.50\text{ m/s}

0.93\text{ m/s}