Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 5 - Force and Motion-I - Questions: 4a

Answer

Functions 1 and 3 are possible functions for the rock's position.

Work Step by Step

The rock is traveling in the positive direction, therefore the functions must have X be positive while t>0. Both functions 1 and 3 have this with every value of time over 0. Function 2, however, does not follow the rule, therefore can not possibly be the function that represents the rock.
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