#### Answer

Assuming the bullet was initially fired from ground level, the bullet’s vertical component of velocity would decrease considerably, perhaps almost to zero, by the time it reached a height of 2.0 km. This is due to the downward acceleration of gravity and also air resistance. The horizontal component of its velocity would also decrease, due to air resistance.

#### Work Step by Step

A projectile thrown at an angle above the horizontal will have both air resistance (vertical and horizontal) and gravity (vertical) negatively impacting its velocity.