Answer:
2 m/s
Explanation:
Velocity is a vector quantity that is given by:
[tex]v=\frac{d}{y}[/tex]
where
d is the displacement of the object (a vector indicating its change in position)
t is the time elapsed
Note that since velocity is a vector, it has both a magnitude and a direction (the same as the displacement).
For the toy train in this problem, we have:
d = 40 m (displacement)
t = 20 s (time elapsed)
So, its velocity is:
[tex]v=\frac{40}{20}=2 m/s[/tex]
