Which hits the ground first, dropped bullet or fired bullet from pistol parallel to the ground?

Question

Firing and dropping occur at the exact same time.

Answer 1

in the absence of air friction, the two bullets would hit the ground at the same time

the horizontal and vertical motions are not related; the horizontal motion is constant (if there are no forces acting in the  horizontal direction) and the vertical motion is controlled solely by gravity (again, in the absence of air friction)

if only gravity controls vertical motion, then both bullets have identical vertical paths since they are both starting with zero vertical speed; they will hit the ground at the same time

Answer 2

In the absence of the aerodynamic effect, gravity would act on both objects equally, both would fall the same distance in the same time. In practice a fired bullet has a trajectory that causes the projectile to increase height in flight. For any given pistol and ammunition the trajectory is a known quantity and details are usually supplied with the weapon. So in practice the fired bullet would take longer because its path is not parallel.

Answer 3

It deponds on the height.

Answer 4

As kuiperbelt2003 said with a visualization: http://www.mansfieldct.org/schools/mms/s...  

Answer 5

In Physics 101 class, they both hit the ground at the same time, if starting from the same height.

In more advanced classes, you'd actually have to take into account the aerodynamics of the bullets, the curvature of the earth, and other factors :-)

Answer 6

They both hit at the same time.