how do i do a...woosh effect

dunno the real name of this effect…but it’s when an object is moving too fast for the camera to capture it so there is this effect like he is…i dunno…

hope you understood what i said…so how do i achieave that effect?

Motion blur may be what you are looking for. In the render options, there is an “MBlur” button that turns it on. What Blender does is render several images, each a fraction of a second away from each other, then merges them together. End result - blurry “whoosh”. There are tutorials on it, just search for them.