Answer:
The value is [tex]t =420 \ s[/tex]
Explanation:
From the question we are told that
The speed of the man is [tex]v = 1.5 \ m/s[/tex]
The distance covered by the man is [tex]d = 630 \ m[/tex]
Generally the time taken is mathematically represented as
[tex]t = \frac{d}{v}[/tex]
=> [tex]t = \frac{630}{1.5}[/tex]
=> [tex]t =420 \ s[/tex]