Given the distance covered and time elapsed, the speed of the object represented by the graph is 8km/hr.
Speed is simply referred to as distance traveled per unit time.
Mathematically, Speed = Distance ÷ time.
Given the data in the question;
Speed = Distance ÷ time
Speed = 400km ÷ 50hrs
Speed = 8km/hr
Given the distance covered and time elapsed, the speed of the object represented by the graph is 8km/hr
Learn more about speed here: brainly.com/question/7359669
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