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Final Answer

Gravity formula

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Corresponding textbooks

College Physics Answers offers screencast video solutions to end of chapter problems in the textbooks published by OpenStax titled "College Physics" and "College Physics for AP Courses". These textbooks are available for free by following the links below. Both the PDF and printed versions of these textbooks contain the same problems. The only difference is that "College Physics" omits the "Test Prep for AP Courses" section found only in the "College Physics for AP Courses" text, but otherwise the end of chapter problems are identical.

OpenStax College Physics AP textbook cover

College Physics for AP Courses

Publication Date
Aug. 12, 2015
ISBN-10: 1-938168-93-3
ISBN-13: 978-1-938168-93-2
ISBN-10: 1-947172-17-4
ISBN-13: 978-1-947172-17-3

Download the PDF for free from OpenStax

OpenStax College Physics AP textbook cover

College Physics

Publication Date
Jun. 21, 2012
ISBN-10: 1-938168-00-3
ISBN-13: 978-1-938168-00-0
ISBN-10: 1-947172-01-8
ISBN-13: 978-1-947172-01-2

Download the PDF for free from OpenStax

Recent questions and answers

Submitted by happyfeet1025 on Sun, 09/23/2018 - 18:29

why did you do 18/25 instead of 25/18

Submitted by ShaunDychko on Mon, 10/15/2018 - 07:40

Thanks a lot for pointing this out happyfeet1025. I've flagged this video for a re-take and put a note in the final answer section. I mistakenly substituted the x-component divided by y-component, which results in the angle being to the West of North. The angle is between the resultant vector and the y-axis.

All the best with your studies,


In reply to by happyfeet1025

Submitted by ariowicaksono on Sat, 09/22/2018 - 23:02

where's  the end of the arrow for number 1 A is the arrow stop at the 7 or 6

Submitted by ristesund23 on Tue, 08/28/2018 - 18:18

can you explain it using 'c'

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