Problems with solutions
http://www.physicsclassroom.com/calcpad/newtlaws/problems
http://www.physicsclassroom.com/reviews/F2D/F2Dans1.cfm#1
UoW-Greenbay: Object on Rope, Appearent Weight Elevator
A list of problems 1-10 are direct application of the 2nd law. Problems 11-30 are more involved.
And a different Physics Classroom problem set
Am interactive physics problem set/quiz
The first problem writen by Andrew; and his solution
The second problem writen by Andrew; and his solution
Problems without solutions
Worked examples
https://boxsand.physics.oregonstate.edu/PH201/Mechanics/Murdock-Textbook/Forces
Recall the Forces Chapter from the Murdock textbook, scroll down to Worked Examples (Section 4.2, pg 79).
Videos
Equilibrium Example: Wolves pulling in multiple directions
Equilibrium Example: Parachuter Felix
Non-equilibrium, Skiing
Systems, 2nd Law, Asteroids