My favorite book of all time:
Physics for Scientists and Engineers with Modern Physics
3rd Edition
by Raymond A. Serway
ISBN # 0-03-096027-4
Legit copies can be had for less than $4 from:
9780030960277: Physics for Scientists and Engineers With Modern Physics - AbeBooks - Serway, Raymond A.: 0030960274
As a general college physics text is covers the basics but goes into a fair amount of detail about understanding the scientific basis for how and why a lot of things work the way they do.
You name it ... If you want to understand how and why
Gears, Aerodynamics, shocks, ICE, Electric Motors, Electronics, Aerodynamics, Work/Energy , Combustion, emissions , pumps, radiators, etc ... etc... the scientific basis is in this book , for just about anything I can think of.
They are up to the 8th edition now ... but the 8th edition is like over $200 from amazon ... over $100 for the kindle version ... generally I still prefer the 3rd edition ... even if the 8th were also just $4 ... the fact that it is so much more expensive is just another reason for me to still prefer the 3rd edition.