Answer:
5 km/h
Explanation:
The speed of an object is a scalar quantity telling us "how fast" an object is moving, regardless of its direction of motion.
The speed of an object is given by
[tex]v=\frac{d}{t}[/tex]
where
d is the distance covered by the object, which is the total length of the path covered
t is the time taken
In this problem we have:
d = 10 km is the distance covered by Carl
t = 2 h is the time taken
So, the speed of Carl is:
[tex]v=\frac{10}{2}=5 km/h[/tex]
