Refer to the following information for the next four questions.
A person holds a rifle horizontally and fires at target. The bullet leaves the muzzle of the rifle with a velocity of 460 m/s. Two seconds later the person hears his bullet strike the target.
Draw a picture of this event: a stick man holding "the rifle," a distant target, a bullet "moving towards" the target, sound waves "reflecting from" the target back to the rifleman. Let t1 represent the time for the bullet to reach the target and t2 represent the time for the sound waves to travel back to the shooter.