## Conceptual Physics (12th Edition)

Published by Addison-Wesley

# Chapter 3 - Reading Check Questions (Comprehension): 24

#### Answer

The speed over the ground is 141 km/h.

#### Work Step by Step

This is discussed on page 51. See Figure 3.12, and use the Pythagorean Theorem to find the length of the resultant vector. $$(100 \,km/h)^{2}+(100 \,km/h)^{2}=x^{2}$$ $$x = 141 \,km/h$$ As a side note, the plane moves at an angle of 45° from its original direction, due to the stiff crosswind.

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.