Can you show us what you have tried? Any partial attempts and ideas you have had well help immensely.
I have a weird problem in projectiles, Anyone who can answer this problem?
The two balls P and Q are projected from a horizontal point O. A bird (a) distance from O was hit by ball P. Then the bird goes vertically into the sky with the velocity of U.When the bird return to the ground it hits by the second ball Q.So prove
We can get around some of this. At the collision of ball P hitting the bird we can go ahead (for the sake of argument) and assume that all the momentum of ball P went into the bird going upward at U. (Never mind that this is a gross violation of conservation of momentum.) We can make a prediction based on this: when ball Q hits the bird, the bird (somehow) and ball Q end up with a speed of 0.
Even with these (absurd) assumptions we still need the mass of the bird and the mass of the ball.
If there is another sequence for this chain of events, please let us know.