A helicopter is rising straight up in the air. Its distance from the ground t seconds after takeoff is s(t) feet, where s(t) = t? + t. (a) (b) How long will it take for the helicopter to rise to 20 feet? Find the velocity and acceleration of the helicopter when it is 20 feet above the ground. (a) The time it will take for the helicopter to rise to 20 feet is seconds. (b) When the helicopter is 20 feet above the ground, its velocity is feet per second. When the helicopter is 20 feet above the ground, its acceleration is feet per second squared.
A helicopter is rising straight up in the air. Its distance from the ground t seconds after takeoff is s(t) feet, where s(t) = t? + t. (a) (b) How long will it take for the helicopter to rise to 20 feet? Find the velocity and acceleration of the helicopter when it is 20 feet above the ground. (a) The time it will take for the helicopter to rise to 20 feet is seconds. (b) When the helicopter is 20 feet above the ground, its velocity is feet per second. When the helicopter is 20 feet above the ground, its acceleration is feet per second squared.
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 7ECP: The kinetic energy E of an object varies jointly with the object’s mass m and the square of the...
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Transcribed Image Text:A helicopter is rising straight up in the air. Its distance from the ground t seconds after takeoff is s(t) feet, where s(t) = t? +t.
(a)
(b)
How long will it take for the helicopter to rise to 20 feet?
Find the velocity and acceleration of the helicopter when it is 20 feet above the ground.
(a) The time it will take for the helicopter to rise to 20 feet is seconds.
(b) When the helicopter is 20 feet above the ground, its velocity is feet per second.
When the helicopter is 20 feet above the ground, its acceleration is feet per second squared.
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