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12 questions from this quiz
Treat each component separately
Differentiate the iˉ\bar{i}iˉ component
Velocity vector
Acceleration vector
The magnitude of velocity
13
9t2iˉ−12t2jˉ9t^2\bar{i} - 12t^2\bar{j}9t2iˉ−12t2jˉ
135 m/s
18tiˉ−24tjˉ18t\bar{i} - 24t\bar{j}18tiˉ−24tjˉ
After differentiating
m/s
Speed is always positive
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