Those are easy actually but with the right tools.
The key is that you need a long exposure which requires:
- Stable support like a sturdy tripod.
- Long shutter-speed which you dial-in in Shutter-Priority or Manual mode.
- A low ISO, to maximize shutter-speed.
- A small aperture, to maximize shutter-speed.
- A ND density filter should the previous two steps not result in a slow enough shutter-speed.
The shutter-speed you need depends on the speed of water and how blurry you want the results. 2s should be a minimum, but you may easily need 15s or more. Your camera can do 30s but not close the aperture below F/8, so if you do this when its bright you will most likely need the ND filter. You will also have to hold it by hand during the entire exposure since I do not thing your cameras has a filter-thread.