Essential University Physics: Volume 1 (3rd Edition)

Published by Pearson
ISBN 10: 0321993721
ISBN 13: 978-0-32199-372-4

Chapter 9 - Exercises and Problems - Page 165: 53

Answer

$\vec{v}=4.4\hat{i}+3.0\hat{j}$

Work Step by Step

We know that momentum is conserved. We assume the astronaut is initially at rest. We first find the final speed of the astronaut: $\vec{v}=-.85cos(20)\hat{i}-.85sin(20)\hat{j}$ $\vec{v}=-.8\hat{i}-.29\hat{j}$ Thus, we use conservation of momentum: $(5.8)v_3 +(-.8\hat{i}-.29\hat{j})(60)+1.6(14)\hat{i}=0$ $\vec{v}=4.4\hat{i}+3.0\hat{j}$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

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.