Chapter 3: Problem 28
The speed of a train pulling out of a station is given by the equation \(s=t^{2}+t,\) where \(s\) is the speed in kilometers per hour and \(t\) is the time in seconds from when the train starts moving. The equation holds for all situations where \(0 \leq t \leq 4\). In kilometers per hour, what is the positive difference in the speed of the train 4 seconds after it starts moving compared to the speed 2 seconds after it starts moving?
Short Answer
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Key Concepts
These are the key concepts you need to understand to accurately answer the question.