The tip of a robot arm is moving to the right at 13m/s. Four seconds later, it is moving to the left at 2m/s. What is the magnitude of the change in velocity and what is the average acceleration? (Assume that the +x direction is the positive direction)
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Expert's answer
2020-06-17T09:26:34-0400
We know that velocity depends on time and acceleration as follows:
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