Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter6: Motion In Two Dimensions
Section6.3: Relative Velocity
Problem 27PP
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![7. Amodelrocket is shot into the air. While the engineisstill firing, its height
above the ground is modeled by the function s(t)=-4t³ +12t² +72t,
where s is measured in feet and t is measured in seconds. Find the
velocity and acceleration of the rocket at t=2 seconds. Is the engine
still firing at that moment?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe5eaf7f8-9c60-4596-9e99-7190bc756010%2Fdef92db6-1ccc-4c3a-94e3-f6355c49ef3b%2Fk96g29d_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7. Amodelrocket is shot into the air. While the engineisstill firing, its height
above the ground is modeled by the function s(t)=-4t³ +12t² +72t,
where s is measured in feet and t is measured in seconds. Find the
velocity and acceleration of the rocket at t=2 seconds. Is the engine
still firing at that moment?
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