The average speed is 10 m/s.
Explanation:
The motion of the object is divided into two parts.
In the first part, the object covers a distance of
[tex]d_1 = 100 m[/tex]
In a time interval of
[tex]t_1 = 4 s[/tex]
In the second part, the object is a t rest, so it covers a distance of
[tex]d_2 = 0[/tex]
In a time interval of
[tex]t_2 = 6 s[/tex]
The average speed for the trip is given by the ratio between the total distance and the total time taken, therefore:
[tex]s=\frac{d_1+d_2}{t_1+t_2}=\frac{100+0}{4+6}=10 m/s[/tex]
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