exercise Panning with different shutter speeds

picture1 shutter speed 1/2500 of a second F4, this picture looks like the dog has been frozen, this shutter speed shows no sense of movement whatsoever,
Picture 2 shutter speed 1/640 of a second F5.3 again there is no sense of movement in the dog, its just  a bland photograph .
Picture3 shutter speed 1/400 of a second F5 this is still a sharp picture but it looks a bit more fluid.
Picture 4 shutter speed 1/160 of a second F5.6 the dog is mostly sharp there is some blur to the front of her and the background is starting to look streaky.
Picture5 shutteer speed 1/125 of a second F8 the dog is still fairly sharp but again the background is slightly out of focus this is starting to give the impression on movement.
Picture6 shutter speed 1/50 of a second F14 movement of the dog can be seen although it is still fairly sharp but the background is very streaky.
Picture7 shutter speed 1/30 of a second F16 the whole picture is blurred now although you can still make out the dog.
Picture8 shutter speed 1/20s F18 the whole picture again is very streaky.
Picture9 shutter speed 1/10 of a second F25 the background is very streak but it is still possible to make out the dog.
Picture10 shutter speed 1/4 of  a second F25 the entire picture is blurred you can't really make out what is in the picture.

My favorite two pictures from  the last two exercises are : from the first one photograph five, My thoughts on this one are you can see the golfer clearly but the club is blurred showing a sense of movement as it is swung, there is also movement to the hands. I prefer this one for the above reasons but also i think it is slight more realistic than some of the others any shutteer speed above about 320 of a second froze the shoot, which is good if you are photographing a golfer who wants to check their position or swing, if the shutter speed is too slow i found that the club would be the first thing to blur then the hands and finally the whole body of the golfer.
My favorite photograph from the last exercise was number six, I liked the fact that there was plenty of movement shown in the photograph, by shooting at 1/125 of a second the background was nicely blurred and although there is blue to the dog it is still easy to see what the picture of of about, i liked the sense of speed and enjoyment of the dog in this one, when I looked back over the ones taken at a higher shutter speed they appear to be almost posed. 

What have I learned from these last two exercises?
i have learned that firstly it depends what you are photographing and what you want to achieve from the photograph, do you want movement but it still be clear what the photograph is all about or do you want to freeze the picture as if you are freezing a moment in time.

I looked at other photographs of golfers and decided that although I liked the frozen look I actually prefer a slight blur to portray a sense of movement.

As far as the panning photographs are concerned I found this quite difficult at first to achieve what I wanted, it took me several attempts and I think panning will be a learning curve for me.