2. The height above the ground, h, in metres of a car on a Ferris Wheel as the Ferris Wheel turns can be modelled by the function h(t) = -12cos +15, wheret is the time, in seconds, a) Determine the average rate of change in height from 60 to 240 seconds. b) Given that the Ferris Wheel's instantaneous rate of change is zero at 240 sec, prove the Ferris Wheel is at its minimum height at 240 sec. c) Given your knowledge of trig functions, state the other time(s) the Ferris Wheel has an instantaneous rate of change of zero in the first 7 mins of the ride.

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter3: Functions
Section3.3: More On Functions; Piecewise-defined Functions
Problem 99E: Determine if the statemment is true or false. If the statement is false, then correct it and make it...
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2. The height above the ground, h, in metres of a car on a Ferris Wheel as the Ferris Wheel turns
can be modelled by the function h(t) = -12cos
60
+ 15, wheretis the time, in seconds.
a) Determine the average rate of change in height from 60 to 240 seconds.
b) Given that the Ferris Wheel's instantaneous rate of change is zero at 240 sec, prove the Ferris
Wheel is at its minimum height at 240 sec.
c) Given your knowledge of trig functions, state the other time(s) the Ferris Wheel has an
instantaneous rate of change of zero in the first 7 mins of the ride.
Transcribed Image Text:2. The height above the ground, h, in metres of a car on a Ferris Wheel as the Ferris Wheel turns can be modelled by the function h(t) = -12cos 60 + 15, wheretis the time, in seconds. a) Determine the average rate of change in height from 60 to 240 seconds. b) Given that the Ferris Wheel's instantaneous rate of change is zero at 240 sec, prove the Ferris Wheel is at its minimum height at 240 sec. c) Given your knowledge of trig functions, state the other time(s) the Ferris Wheel has an instantaneous rate of change of zero in the first 7 mins of the ride.
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