speed camera question

hi guys i am new to this place...

however i have several questions to ask,could anyone of you please clear my doubts?

1) Where does the speed camera take your speed? ( front or back)

2) Would it emit an obvious flash in broad daylight?

3) If you were to accelerate to 120 kpmh then jamming your brake at the speed camera till 70 kmph at a 70 km road would you get caught?

1) back

2) yes if u look hard into ur side mirror

3) no, as long as when u pass its legal speed