Speed of Han: 8 miles per hour (mph)
We know that he starts at point 0, so the distance can be calculated using the formula:
[tex]d(t)=v\cdot t[/tex]Where v is the speed, and t is the time passed (in hours). After 45 minutes (or 3/4 hours), with a speed of 8mph, we calculate the distance:
[tex]d(\frac{3}{4})=8\cdot\frac{3}{4}=6\text{ miles}[/tex]