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Engage in Argument A ball is pushed from a stop and rolls 6 m in 2 s.
Student A says the average speed of the ball is 3 m/s. Student B says the
average speed of the ball is 1.5 m/s2. Which student is correct? Explain your
answer.
This is because by student A's recording, we get the average speed = total distance/total time = 6 m/2 s = 3 m/s. Student B recorded an average speed of 1.5 m/s². This cannot be correct because it is in the unit of acceleration.
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