Physics Question 3

From a helicopter situated 600m of height from the earth, a bomb is slightly dropped to the ground. A soldier sees this in the very moment and he straight away fires a rifle bullet, which is velocity is 120ms-1.

1. What is the time taken for the bullet to hit the bomb?
2. When the two impacts what is the height to them from the earth?
3. If the bullet rifle didn't hit the bomb, after another two seconds, he fires again in the same velocity. When it hits the bomb what is the height for the bomb from earth?
4. If the bullet didn't hit the bomb as in the third question, after two seconds the soldier runs at a speed of 7ms-1. When the bomb fall on the ground how long can the soldier run?