Here's another exercise from the Blair book:
Now, notice the frog exercise. We begin as Froggy is in mid-jump. Then he reaches the ground and rests momentarily. Then away he goes and again is in mid-jump when we leave him.
The resting frog is positioned closer to the left than the right; the remainder of the sequence is 3 drawings. Thus, the detailing of him descending occurs a little faster than the sequence of him bounding away.
Personally, because I get more out of seeing him spring into action rather than resting after having sprung... so to speak... the position of the resting frog and the fact that the spring takes a little longer seems right.
Just to set the record straight, I'm not planning on becoming an animator... but I love cartoons, and I love cartoon drawings... so it's probably wise to understand a little bit about the making of cartoons.