If a plane is traveling horizontal velocity of 105ms the plane was 20meters in the air when the boy throw his dog where the dog land?

Answer 1

Do Not Throw Dogs. Period, end of statement.

It is against the law, as it should be. Animal cruelty is terrible and unredeemable. If you are thinking of throwing ANYONE or ANYTHING out of a plane, throw yourself out for thinking that!

Answer 2

Assuming no air resistance and neglecting other factors, the horizontal velocity of the plane does not affect the vertical motion of the dog. The dog will land at the same horizontal distance from the point it was thrown, following a parabolic path due to gravity. The time it takes for the dog to land can be calculated based on its initial velocity and height.