27 Oct 2021
Problem 21
Page 44
Section: Problems
Chapter 2: Describing motion: Kinematics in one dimension
Textbook ExpertVerified Tutor
27 Oct 2021
Given information
A car moving in a straight line starts at t=0
Passes the point with speed 11.0 m/s
a) The average velocity?
b) The average acceleration t=20.0 s?
Step-by-step explanation
Step 1.
a) We know that : the average acceleration 
defined as the displacement travelled divided by the time taken to make this displacement :
defined as the displacement travelled divided by the time taken to make this displacement :
Where :
is the average acceleration of the car .
is the the time the car took to to change its velocity .
are the final velocity and the initial velocity of the car
are the finial and the initial position of the car .From Givens we know that : 
Plugging known information to get the velocity :
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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922
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