SOLUTION: a plane's distance in meters is described by the function s(t)=220t-15t^2-60In(t+1).
1)Find a function that describes the speed of the plane
2)Find the value of time when the s
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Question 971156: a plane's distance in meters is described by the function s(t)=220t-15t^2-60In(t+1).
1)Find a function that describes the speed of the plane
2)Find the value of time when the speed is 100ms^-1
Answer by anand429(138) (Show Source): You can put this solution on YOUR website!
Speed is given as time derivative of distance
i.e.
So,
=
= Ans to part 1
For part2, when speed is 100ms^-1,
t=3.56 seconds ignoring negative value of t.
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