The average acceleration in the first 10 seconds of the journey is 2 m/s²; option B.
What is acceleration?
Acceleration is the rate of change of velocity with time.
Acceleration = change in velocity/time
From the graph;
Acceleration in first seconds = 20 - 0/5 = 4 m/s²
Acceleration in second 5 seconds = 0
Average acceleration = 4 + 0/2
Average acceleration = 2 m/s²
In conclusion, average acceleration is the average of the final and initial acceleration.
Learn more about acceleration at: https://brainly.com/question/14344386
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