Avoiding motion blur from a network camera I'm a newbie here. I have a problem that I don't really understand. Hopefully, someone can share their experience.

If I have an ip camera of 

1) 640x480(sensor width = 3.6mm), 

2) focal length from 5 to 50mm, 

3) need to record 30fps, 

What is the suitable shutter speed to be use to avoid motion blur?Assuming that the object distance to camera is 30ft (80 ppf needed =~ 13.5mm lens focal length needed).
Shutter speed and motion blur are inversely proportional.  The higher the shutter speed, the less amount of motion blur, so crank up the shutter speed as high as it will go.  If the exposure comes out too dark, add more lights.  Keep in mind that high shutter speeds in combination with fluorescent or HMI light can produce scrolling banding due to the power cycle frequency.