Jonesy: But you got no proof. Besides, I couldn't jump that fence. It's physically impossible.
Dick: [enters] Physically impossible? That's where you're wrong. You may not have much respect for the law, Jonesy, but there's one law that you can't break: Coulomb's Third Law of Universal G
Jonesy: What?
Dick: It states that the force between two objects is proportional to the algebraic products of their respective charges, as well as proportional to the inverse square of the distance between them! But of course, you knew that, didn't you, Jonesy?
Jonesy: Not- Not all of it.
Dick: You're object X, and the fence is object Y. Now, where V is the velocity of the 2 objects, and R is the distance between them, and E is a unit vector directed from the first object to the second, we see that the fence proved little challenge.
Jonesy: Well... I guess.
Dick: You guess! I bet you guess. And so we see that X equals zero as Y approaches infinity! That's how you avoided the security camera. That's how you managed to get back over the fence. That's how they found you exactly 1.3 miles from the crime scene, proving that you and only you could have perpetrated this heinous crime! There's the proof!
Jonesy: Okay! Okay! Okay! You got me! I did it! I did it! My god! What kind of a cop are you?
Dick: I'm not a cop! I'm a physics professor!