Answer
C
Work Step by Step
$N=T-40.0$
For $T=40,~N=40-40=0$
For $T=50,~N=50-40=10$
For $T=60,~N=60-40=20$
For $T=70,~N=70-40=30$
For $T=80,~N=80-40=40$
Only C passes through these points.
Physics Technology Update (4th Edition)
by Walker, James S.
Published by
Pearson
ISBN 10:
0-32190-308-0
ISBN 13:
978-0-32190-308-2
Chapter 1 - Introduction to Physics - Problems and Conceptual Exercises - Page 17: 53
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