Question

A boy runs a lap around a 200-m track in a time of 30 s.Compute his average speed.

Answer 1

Given:

$d=200\:\rm m$

$t=30\:\rm s$

The average speed

$$v_{\rm ave}=\frac{d}{t}=\rm \frac{200\: m}{30\: s}=6.7\: m/s$$