EBK PHYSICS
5th Edition
ISBN: 8220103026918
Author: Walker
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 40GP
Which of the following quantities have the dimensions of an acceleration? (a) xt2, (b) v2/x, (c) x/t2, (d) v/t.
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A spacecraft accelerates from rest: a = bt = 0.2t until a = 10.4, after which it continues at constant acceleration 10.4. Everything is in a straight line. How much time does it take to reach 10.4? (The base units are meters and seconds.) And what are the dimensions of the number b in a = bt?
A spacecraft accelerates from rest: a = bt = 0.2t until a = 10.4, after which it continues at constant acceleration 10.4. Everything is in a straight line.
a) How much time does it take to reach 10.4? (The base units are meters and seconds.)
b) what are the dimensions of the number b in a = bt?
c) a(t) = bt, with b=0.4, until a(t) = A = 9.3 , How fast is it going when the acceleration reaches A?
d) how far does the spacecraft travel during its time of variable acceleration? b=1.0 and A = 8.9.
The following data were taken on five cars traversing a 1.6-km highway.
Car Time (minutes)
A 1.9
B 1.2
C 1.8
D 1.1
E 1.9
Determine the traffic density, in vehicles per km. Express your answer in 2 decimal places.
Chapter 1 Solutions
EBK PHYSICS
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