How to get motion blur and freeze motion, in the same shot?

I know its possible.. but i don't quite know how to get your human subject to be sharp and clear while all other moving things in the frame gets serious motion blur. Below are two examples i took of my wife trying to have her hold as still as possible, and keeping the camera as still as possible..

unfortunately for the first picture i had only the wobbly handle from my suitcase to use as a tripod..err suitcasepod..and the second due to lack of communication she didnt keep her hand totally still during this shot..but still she isnt as sharp in the picture as i had hoped she would be.(and while we are at it, how can i separate her better from the background?) Can anyone give me some pointers as to how to do what im trying to do?

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This is called "shutter drag". Using on/off-camera flash can help with this effect greatly (and make it easier on your subject!)

I just watched a video not too long ago from Mike Browne about this:
http://www.youtube.com​/watch?v=oR-OOb-ZnKI

Another Infolink:
http://www.ultimatepho​toguide.com …-movement-to-your-images/

You'll also see some info as noted above about doing "rear/2nd curtain" flash sync -- this is likely going to get you the type of effect you want (very motion blurred, exposed around subject, very well frozen subject).

Your doing everything right. Couple of pointers.

1. The faster the moving objects are going, the fast shutter speed you can use to get blur in the moving objects, and the easier it will be for the model to hold the pose through the exposure.

2. The more the moving objects cross between your camera and the model the more the models exposure will be washed out and the less contrast the model will have.

waz0wski wrote in post #15619768
This is called "shutter drag". Using on/off-camera flash can help with this effect greatly (and make it easier on your subject!)

I just watched a video not too long ago from Mike Browne about this:
http://www.youtube.com​/watch?v=oR-OOb-ZnKI

Another Infolink:
http://www.ultimatepho​toguide.com …-movement-to-your-images/

You'll also see some info as noted above about doing "rear/2nd curtain" flash sync -- this is likely going to get you the type of effect you want (very motion blurred, exposed around subject, very well frozen subject).

A flash or strobe will also freeze the moving objects in the shot which may or may not be wanted. Having the model much closer the the strobe/flash can mitigate this to some extent.

Thanks guys. I think also doidinho's second point makes a lot of sense, to make sure that the moving objects dont go between the camera and the subject. Ill have to work on using the flash also then, if i can get the light only on my stationary subject.

thanks guys. i appreciate your help.