Displacement via Net Change Theorem
An object moves along a straight line with velocity meters per second, for measured in seconds.
Use the Net Change Theorem to find the displacement of the object on the interval . That is, compute
Hint
Let , so . Rewrite the integral in terms of , update the bounds accordingly, and then evaluate using the antiderivative of .
Step-by-step solution
Let , so . When , , and when , . The integral becomes
This evaluates to . Since velocity is positive throughout , this value also represents the total distance traveled, and the displacement is meters.
Sign of Velocity on the Interval
Hint
Step-by-step solution
They are equal. Since v(t) = 1/(t+1) is positive for all t in [0,10], the object never reverses direction, so the total distance traveled matches the net displacement exactly, both equal to ln(11) meters.
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