Student or Learner
Whenever a biker's bike gets collided with something. "Biker goes forward in air for few meters" or "biker falls few meters away from bike". "He remains in air for few meters and then falls down".
None of your sentences is natural. Try something like "The biker was thrown into the air and landed a few metres from his bike".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.