I don't even think I could draw a picture of that.
But since we are offering free physics textbooks, here is one my professor wrote strictly on mechanics:
Mechanics ebook
I find it a droll alternative to the required textbook.
Here is an excerpt:
Smarta**
But wait a second! You think you can find a law relating the force acting on an object to its acceleration? That's bull! I can show you two cases where you have the same forces acting on the objects, but their motion is different.
Sir Isaac
Oh yes, doth though really think so? Do thee realize there is more brains in my little finger than you're entire hand. Actually I'm not really too sure about brains. After all I'm the inventor of mechanics, not neurophysiology. So go on, you scaliwag.
Smarta**
Yes well my example, stupid, is what happens if you drop a glass of coke from inside a car turning a corner, as opposed to what happens to the same coke inside the cinema. While the coke is in free fall, it only feels the force of gravity. And it's the same force in both cases right? Well in the cinema, it ends up on your own lap, whereas in the car it ends up on someone elses. Clearly a different outcome, but the force is the same.
Sir Isaac
Coke? Cars? Cinemas? I'm not suppose to know about that, but anyway, how pretentious of you to say cinema. Don't you really want to say movie theater? Your from the US after all.