In an effort to show your ball throwing skills, you throw ball #1 with an initial speed of 25.0 m/s at an angle of 70 relative to the horizontal, then you throw a second ball (ball #2) with the same speed as ball #1 and manage to hit ball #1 in-flight. (a) At what angle ball #2 needs to be thrown so that it arrives at the same point as ball #1 in-flight? (b) How much time later ball #2 needs to be thrown so that both balls meet at the same point in-flight?