While the gondola is rising at a speed of 2.0 m/s, a passenger in a balloon-supported gondola throws a small ball down at a speed of 5.0 m/s relative to his body. A person who measures the ball's velocity at the instant of release will find that the ball's velocity relative to the ground at that instant is
1) 2.0 m/s, up.
2) 3.0 m/s, down.
3) 3.0 m/s, up.
4) 5.0 m/s, down.
5) 12.8 m/s, down.
Answer: 2