Pls show complete solution. 7. Amodelrocket is shot into the air. While the engineisstill firing, its heightabove 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 thevelocity and acceleration of the rocket at t=2 seconds. Is the enginestill firing at that moment?

Answered: n s(t)=-4t³ +12t² +72t , .3

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n s(t)=-4t³ +12t² +72t , .3

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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Pls show complete solution.

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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