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C.11 The velocity of a butterfly is shown. For the entire time interval, is the displacement of the Velocity (m/s) butterfly positive, negative, or zero? Explain. 1.04 L Positive L Negative E Zero iv. Cannot be determined Time (s) 5.0

C.11 The velocity of a butterfly is shown. For the entire time interval, is the displacement of the Velocity (m/s) butterfly positive, negative, or zero? Explain. 1.04 L Positive L Negative E Zero iv. Cannot be determined Time (s) 5.0

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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C.11 The velocity of a butterfly is shown. For the Velocity (m/s) entire time interval, is the displacement of the butterfly positive, negative, or zero? Explain. 1.0 + L Positive L Negative E Zero iv. Cannot be determined +Time (s) 5.0 C.12 A penguin swimming through the icy Antarctic waters accelerates from 2.0 mis to 4.0 m/s over a period of 4.0 seconds, then slows down to a stop over a period of 3.0 seconds and reverses direction, accelerating to 3.0 mis in the opposite direction over a period of 4.0 seconds. Assume the penguin's acceleration was constant over each of the three time periods, and that it started out traveling in the positive direction. Draw the penguin's velocity versus time graph. C.13 An eagle is soaring in a straight line from t= 0s to t= 10 s. Over that time interval, her average velocity is always greater than or equal to her instantaneous velocity. If her initial velocity is 5.0 mis, draw two different possible velocity versus time graphs for the eagle. C.14 A truck full of corn is parked at x = 0 and is pointed in the negative direction. If the driver puts it into reverse and holds down on the accelerator, will the following quantities be positive, zero, or negative after one second? (a) position, (b) velocity, (c) acceleration. i Positive H. Negative ii. Zero (b): (a) i Positive i. Negative i. Zero (c) L Positive i. Negative . Zero C.15 David is driving a minivan to work, and he is stopped at a red light. The light tums green and David drives to the next red light, where he stops again. Is Davids average acceleration from light to light positive, negative, or zero? L Positive L Negative E Zero C.17 If you know only the initial position, the final position, and the constant acceleration of an object, can you calculate the final velocity? Explain, C Yes C No C.18 A football is thrown vertically up in the air at 10 mis. If it is tater caught at the same spot it was thrown from, will the speed be greater than, less than, or the same as when it was thrown? Ignore air resistance. L Greater than I Less than . Same C.19 Can an object be increasing in speed as the magnitude of its acceleration decreases? If not, explain why not, and if so, provide an example. C Yes C No
Transcribed Image Text:C.11 The velocity of a butterfly is shown. For the Velocity (m/s) entire time interval, is the displacement of the butterfly positive, negative, or zero? Explain. 1.0 + L Positive L Negative E Zero iv. Cannot be determined +Time (s) 5.0 C.12 A penguin swimming through the icy Antarctic waters accelerates from 2.0 mis to 4.0 m/s over a period of 4.0 seconds, then slows down to a stop over a period of 3.0 seconds and reverses direction, accelerating to 3.0 mis in the opposite direction over a period of 4.0 seconds. Assume the penguin's acceleration was constant over each of the three time periods, and that it started out traveling in the positive direction. Draw the penguin's velocity versus time graph. C.13 An eagle is soaring in a straight line from t= 0s to t= 10 s. Over that time interval, her average velocity is always greater than or equal to her instantaneous velocity. If her initial velocity is 5.0 mis, draw two different possible velocity versus time graphs for the eagle. C.14 A truck full of corn is parked at x = 0 and is pointed in the negative direction. If the driver puts it into reverse and holds down on the accelerator, will the following quantities be positive, zero, or negative after one second? (a) position, (b) velocity, (c) acceleration. i Positive H. Negative ii. Zero (b): (a) i Positive i. Negative i. Zero (c) L Positive i. Negative . Zero C.15 David is driving a minivan to work, and he is stopped at a red light. The light tums green and David drives to the next red light, where he stops again. Is Davids average acceleration from light to light positive, negative, or zero? L Positive L Negative E Zero C.17 If you know only the initial position, the final position, and the constant acceleration of an object, can you calculate the final velocity? Explain, C Yes C No C.18 A football is thrown vertically up in the air at 10 mis. If it is tater caught at the same spot it was thrown from, will the speed be greater than, less than, or the same as when it was thrown? Ignore air resistance. L Greater than I Less than . Same C.19 Can an object be increasing in speed as the magnitude of its acceleration decreases? If not, explain why not, and if so, provide an example. C Yes C No
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